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    <link:label xlink:type="resource" xlink:label="dei_EntityAddressAddressLine3_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityAddressAddressLine3_lbl" xml:lang="en-US" id="dei_EntityAddressAddressLine3_lbl">Entity Address, Address Line Three</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:label="AmendmentFlag" xlink:title="AmendmentFlag" />
    <link:label xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_AmendmentFlag_lbl" xml:lang="en-US" id="dei_AmendmentFlag_lbl">Amendment Flag</link:label>
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    <link:label xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_CityAreaCode_lbl" xml:lang="en-US" id="dei_CityAreaCode_lbl">City Area Code</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:label="EntityAddressCityOrTown" xlink:title="EntityAddressCityOrTown" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="CurrentFiscalYearEndDate" xlink:title="CurrentFiscalYearEndDate" />
    <link:label xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US" id="dei_CurrentFiscalYearEndDate_lbl">Current Fiscal Year End Date</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="EntityIncorporationStateCountryCode" xlink:title="EntityIncorporationStateCountryCode" />
    <link:label xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityIncorporationStateCountryCode_lbl" xml:lang="en-US" id="dei_EntityIncorporationStateCountryCode_lbl">Entity Incorporation, State or Country Code</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInformationFormerLegalOrRegisteredName" xlink:label="EntityInformationFormerLegalOrRegisteredName" xlink:title="EntityInformationFormerLegalOrRegisteredName" />
    <link:label xlink:type="resource" xlink:label="dei_EntityInformationFormerLegalOrRegisteredName_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityInformationFormerLegalOrRegisteredName_lbl" xml:lang="en-US" id="dei_EntityInformationFormerLegalOrRegisteredName_lbl">Entity Information, Former Legal or Registered Name</link:label>
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    <link:label xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_LocalPhoneNumber_lbl" xml:lang="en-US" id="dei_LocalPhoneNumber_lbl">Local Phone Number</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:label="EntityAddressPostalZipCode" xlink:title="EntityAddressPostalZipCode" />
    <link:label xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_EntityAddressPostalZipCode_lbl" xml:lang="en-US" id="dei_EntityAddressPostalZipCode_lbl">Entity Address, Postal Zip Code</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:label="EntityAddressStateOrProvince" xlink:title="EntityAddressStateOrProvince" />
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    <link:label xlink:type="resource" xlink:label="dei_NoTradingSymbolFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_NoTradingSymbolFlag_lbl" xml:lang="en-US" id="dei_NoTradingSymbolFlag_lbl">No Trading Symbol Flag</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:label="TradingSymbol" xlink:title="TradingSymbol" />
    <link:label xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="dei_TradingSymbol_lbl" xml:lang="en-US" id="dei_TradingSymbol_lbl">Trading Symbol</link:label>
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_SecurityExchangeName" xlink:label="SecurityExchangeName" xlink:title="SecurityExchangeName" />
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    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="EntityWellKnownSeasonedIssuer" xlink:title="EntityWellKnownSeasonedIssuer" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember" xlink:label="AociIncludingPortionAttributableToNoncontrollingInterestMember" xlink:title="AociIncludingPortionAttributableToNoncontrollingInterestMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_lbl" xml:lang="en-US" id="us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember_lbl">AOCI Including Portion Attributable to Noncontrolling Interest [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="AdditionalPaidInCapital" xlink:title="AdditionalPaidInCapital" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl1" xml:lang="en-US" id="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_lbl1">APIC, Share-based Payment Arrangement, Increase for Cost Recognition</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="AllocatedShareBasedCompensationExpense" xlink:title="AllocatedShareBasedCompensationExpense" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xml:lang="en-US" id="us-gaap_AllocatedShareBasedCompensationExpense_lbl">Share-based compensation expense incurred</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:title="label: AllocatedShareBasedCompensationExpense to us-gaap_AllocatedShareBasedCompensationExpense_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:label="AllowanceForDoubtfulAccountsReceivableCurrent" xlink:title="AllowanceForDoubtfulAccountsReceivableCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xml:lang="en-US" id="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl">Accounts receivable, allowance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:title="label: AllowanceForDoubtfulAccountsReceivableCurrent to us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries" xlink:label="AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries" xlink:title="AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_lbl" xml:lang="en-US" id="us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_lbl">Cash limit for dividends, distributions and redemption on equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries" xlink:to="us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_lbl" xlink:title="label: AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries to us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xml:lang="en-US" id="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl">Potentially dilutive shares excluded (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" xlink:title="label: AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount to us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="AssetsFairValueDisclosure" xlink:title="AssetsFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsFairValueDisclosure_lbl" xml:lang="en-US" id="us-gaap_AssetsFairValueDisclosure_lbl">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsFairValueDisclosure" xlink:to="us-gaap_AssetsFairValueDisclosure_lbl" xlink:title="label: AssetsFairValueDisclosure to us-gaap_AssetsFairValueDisclosure_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="AssetsAbstract" xlink:title="AssetsAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_AssetsAbstract_lbl" xml:lang="en-US" id="us-gaap_AssetsAbstract_lbl">ASSETS</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl" xlink:title="label: AssetsAbstract to us-gaap_AssetsAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsAbstract_lbl1" xml:lang="en-US" id="us-gaap_AssetsAbstract_lbl1">Assets [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl1" xlink:title="label: AssetsAbstract to us-gaap_AssetsAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="Assets" xlink:title="Assets" />
    <link:label xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_Assets_lbl" xml:lang="en-US" id="us-gaap_Assets_lbl">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="us-gaap_Assets_lbl" xlink:title="label: Assets to us-gaap_Assets_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_Assets_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_Assets_lbl1" xml:lang="en-US" id="us-gaap_Assets_lbl1">Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Assets" xlink:to="us-gaap_Assets_lbl1" xlink:title="label: Assets to us-gaap_Assets_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="AssetsCurrent" xlink:title="AssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="us-gaap_AssetsCurrent_lbl">Current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl" xlink:title="label: AssetsCurrent to us-gaap_AssetsCurrent_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_AssetsCurrent_lbl1" xml:lang="en-US" id="us-gaap_AssetsCurrent_lbl1">Total current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl1" xlink:title="label: AssetsCurrent to us-gaap_AssetsCurrent_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsNet" xlink:label="AssetsNet" xlink:title="AssetsNet" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_AssetsNet_lbl" xml:lang="en-US" id="us-gaap_AssetsNet_lbl">Net assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="us-gaap_AssetsNet_lbl" xlink:title="label: AssetsNet to us-gaap_AssetsNet_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsNet_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsNet_lbl1" xml:lang="en-US" id="us-gaap_AssetsNet_lbl1">Net Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNet" xlink:to="us-gaap_AssetsNet_lbl1" xlink:title="label: AssetsNet to us-gaap_AssetsNet_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="AssetsNoncurrent" xlink:title="AssetsNoncurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsNoncurrent_lbl" xml:lang="en-US" id="us-gaap_AssetsNoncurrent_lbl">Non-current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsNoncurrent" xlink:to="us-gaap_AssetsNoncurrent_lbl" xlink:title="label: AssetsNoncurrent to us-gaap_AssetsNoncurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsCurrentAbstract_lbl" xml:lang="en-US" id="us-gaap_AssetsCurrentAbstract_lbl">Current assets:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl" xlink:title="label: AssetsCurrentAbstract to us-gaap_AssetsCurrentAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="BalanceSheetLocationDomain" xlink:title="BalanceSheetLocationDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_BalanceSheetLocationDomain_lbl" xml:lang="en-US" id="us-gaap_BalanceSheetLocationDomain_lbl">Balance Sheet Location [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain_lbl" xlink:title="label: BalanceSheetLocationDomain to us-gaap_BalanceSheetLocationDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="BalanceSheetLocationAxis" xlink:title="BalanceSheetLocationAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_BalanceSheetLocationAxis_lbl" xml:lang="en-US" id="us-gaap_BalanceSheetLocationAxis_lbl">Balance Sheet Location [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis_lbl" xlink:title="label: BalanceSheetLocationAxis to us-gaap_BalanceSheetLocationAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="BuildingAndBuildingImprovementsMember" xlink:title="BuildingAndBuildingImprovementsMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xml:lang="en-US" id="us-gaap_BuildingAndBuildingImprovementsMember_lbl">Buildings and Improvements [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BuildingAndBuildingImprovementsMember" xlink:to="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xlink:title="label: BuildingAndBuildingImprovementsMember to us-gaap_BuildingAndBuildingImprovementsMember_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_BuildingAndBuildingImprovementsMember_lbl1" xml:lang="en-US" id="us-gaap_BuildingAndBuildingImprovementsMember_lbl1">Building and Building Improvements [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BuildingAndBuildingImprovementsMember" xlink:to="us-gaap_BuildingAndBuildingImprovementsMember_lbl1" xlink:title="label: BuildingAndBuildingImprovementsMember to us-gaap_BuildingAndBuildingImprovementsMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock" xlink:label="BusinessDescriptionAndBasisOfPresentationTextBlock" xlink:title="BusinessDescriptionAndBasisOfPresentationTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl" xml:lang="en-US" id="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl">BASIS OF FINANCIAL STATEMENT PRESENTATION</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl1" xml:lang="en-US" id="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl1">Business Description and Basis of Presentation [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BusinessDescriptionAndBasisOfPresentationTextBlock" xlink:to="us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl1" xlink:title="label: BusinessDescriptionAndBasisOfPresentationTextBlock to us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member" xlink:label="CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member" xlink:title="CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member" />
    <link:label xlink:type="resource" xlink:label="us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member_lbl" xml:lang="en-US" id="us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member_lbl">Balance without Adoption of Topic 606 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member" xlink:to="us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member_lbl" xlink:title="label: CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member to us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalExpendituresIncurredButNotYetPaid" xlink:to="us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" xlink:title="label: CapitalExpendituresIncurredButNotYetPaid to us-gaap_CapitalExpendituresIncurredButNotYetPaid_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalizedContractCostImpairmentLoss" xlink:label="CapitalizedContractCostImpairmentLoss" xlink:title="CapitalizedContractCostImpairmentLoss" />
    <link:label xlink:type="resource" xlink:label="us-gaap_CapitalizedContractCostImpairmentLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_CapitalizedContractCostImpairmentLoss_lbl" xml:lang="en-US" id="us-gaap_CapitalizedContractCostImpairmentLoss_lbl">Impairment loss on contract assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalizedContractCostImpairmentLoss" xlink:to="us-gaap_CapitalizedContractCostImpairmentLoss_lbl" xlink:title="label: CapitalizedContractCostImpairmentLoss to us-gaap_CapitalizedContractCostImpairmentLoss_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl1" xlink:title="label: CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect to us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl1" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfTreasuryStockTable" xlink:label="ClassOfTreasuryStockTable" xlink:title="ClassOfTreasuryStockTable" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid" xlink:label="ConstructionInProgressExpendituresIncurredButNotYetPaid" xlink:title="ConstructionInProgressExpendituresIncurredButNotYetPaid" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionInProgressExpendituresIncurredButNotYetPaid" xlink:to="us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl" xlink:title="label: ConstructionInProgressExpendituresIncurredButNotYetPaid to us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl1" xml:lang="en-US" id="us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl1">Construction in Progress Expenditures Incurred but Not yet Paid</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionInProgressExpendituresIncurredButNotYetPaid" xlink:to="us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl1" xlink:title="label: ConstructionInProgressExpendituresIncurredButNotYetPaid to us-gaap_ConstructionInProgressExpendituresIncurredButNotYetPaid_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConstructionInProgressMember" xlink:label="ConstructionInProgressMember" xlink:title="ConstructionInProgressMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ConstructionInProgressMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ConstructionInProgressMember_lbl" xml:lang="en-US" id="us-gaap_ConstructionInProgressMember_lbl">Construction in Progress [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConstructionInProgressMember" xlink:to="us-gaap_ConstructionInProgressMember_lbl" xlink:title="label: ConstructionInProgressMember to us-gaap_ConstructionInProgressMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="ContractWithCustomerLiabilityRevenueRecognized" xlink:title="ContractWithCustomerLiabilityRevenueRecognized" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xml:lang="en-US" id="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl">Revenue from settlement of contract liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiabilityRevenueRecognized" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" xlink:title="label: ContractWithCustomerLiabilityRevenueRecognized to us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl1" xml:lang="en-US" id="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl1">Contract with Customer, Liability, Revenue Recognized</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiabilityRevenueRecognized" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl1" xlink:title="label: ContractWithCustomerLiabilityRevenueRecognized to us-gaap_ContractWithCustomerLiabilityRevenueRecognized_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityAbstract" xlink:label="ContractWithCustomerAssetAndLiabilityAbstract" xlink:title="ContractWithCustomerAssetAndLiabilityAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl" xml:lang="en-US" id="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl">Contract with Customer, Asset and Liability [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerAssetAndLiabilityAbstract" xlink:to="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl" xlink:title="label: ContractWithCustomerAssetAndLiabilityAbstract to us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl1" xml:lang="en-US" id="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl1">Contract with Customer, Asset and Liability [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerAssetAndLiabilityAbstract" xlink:to="us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl1" xlink:title="label: ContractWithCustomerAssetAndLiabilityAbstract to us-gaap_ContractWithCustomerAssetAndLiabilityAbstract_lbl1" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerAssetNetCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ContractWithCustomerAssetNetCurrent_lbl" xml:lang="en-US" id="us-gaap_ContractWithCustomerAssetNetCurrent_lbl">Contract assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerAssetNetCurrent" xlink:to="us-gaap_ContractWithCustomerAssetNetCurrent_lbl" xlink:title="label: ContractWithCustomerAssetNetCurrent to us-gaap_ContractWithCustomerAssetNetCurrent_lbl" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerLiabilityCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ContractWithCustomerLiabilityCurrent_lbl" xml:lang="en-US" id="us-gaap_ContractWithCustomerLiabilityCurrent_lbl">Contract liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ContractWithCustomerLiabilityCurrent" xlink:to="us-gaap_ContractWithCustomerLiabilityCurrent_lbl" xlink:title="label: ContractWithCustomerLiabilityCurrent to us-gaap_ContractWithCustomerLiabilityCurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:label="ContractWithCustomerAssetNet" xlink:title="ContractWithCustomerAssetNet" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ContractWithCustomerAssetNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ContractWithCustomerAssetNet_lbl" xml:lang="en-US" id="us-gaap_ContractWithCustomerAssetNet_lbl">Contract asset</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConvertibleDebtFairValueDisclosures" xlink:label="ConvertibleDebtFairValueDisclosures" xlink:title="ConvertibleDebtFairValueDisclosures" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xml:lang="en-US" id="us-gaap_ConvertibleDebtFairValueDisclosures_lbl">Convertible senior notes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleDebtFairValueDisclosures" xlink:to="us-gaap_ConvertibleDebtFairValueDisclosures_lbl" xlink:title="label: ConvertibleDebtFairValueDisclosures to us-gaap_ConvertibleDebtFairValueDisclosures_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfGoodsAndServicesSold" xlink:to="us-gaap_CostOfGoodsAndServicesSold_lbl" xlink:title="label: CostOfGoodsAndServicesSold to us-gaap_CostOfGoodsAndServicesSold_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:title="CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisaggregationOfRevenueTableTextBlock" xlink:to="us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" xlink:title="label: DisaggregationOfRevenueTableTextBlock to us-gaap_DisaggregationOfRevenueTableTextBlock_lbl" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="DisaggregationOfRevenueTable" xlink:title="DisaggregationOfRevenueTable" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTerm_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentTerm_lbl1" xml:lang="en-US" id="us-gaap_DebtInstrumentTerm_lbl1">Debt Instrument, Term</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl">Basis spread on variable rate</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="DebtDisclosureAbstract" xlink:title="DebtDisclosureAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtDisclosureAbstract_lbl" xml:lang="en-US" id="us-gaap_DebtDisclosureAbstract_lbl">DEBT [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl" xlink:title="label: DebtDisclosureAbstract to us-gaap_DebtDisclosureAbstract_lbl" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentConvertibleConversionPrice1_lbl">Conversion price per share (in dollars per share)</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtMember" xlink:label="DebtMember" xlink:title="DebtMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_DebtMember_lbl" xml:lang="en-US" id="us-gaap_DebtMember_lbl">Local Financing [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_DebtMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtMember_lbl1" xml:lang="en-US" id="us-gaap_DebtMember_lbl1">Debt [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtMember" xlink:to="us-gaap_DebtMember_lbl1" xlink:title="label: DebtMember to us-gaap_DebtMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="DebtInstrumentTable" xlink:title="DebtInstrumentTable" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentTable_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentTable_lbl">Schedule of Long-term Debt Instruments [Table]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="DebtInstrumentAxis" xlink:title="DebtInstrumentAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentAxis_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentAxis_lbl">Debt Instrument [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl" xlink:title="label: DebtInstrumentAxis to us-gaap_DebtInstrumentAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="DebtDisclosureTextBlock" xlink:title="DebtDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_DebtDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_DebtDisclosureTextBlock_lbl">DEBT</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock_lbl" xlink:title="label: DebtDisclosureTextBlock to us-gaap_DebtDisclosureTextBlock_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock_lbl1" xlink:title="label: DebtDisclosureTextBlock to us-gaap_DebtDisclosureTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount" xlink:label="DebtLongtermAndShorttermCombinedAmount" xlink:title="DebtLongtermAndShorttermCombinedAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl" xml:lang="en-US" id="us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl">Debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtLongtermAndShorttermCombinedAmount" xlink:to="us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl" xlink:title="label: DebtLongtermAndShorttermCombinedAmount to us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtLongtermAndShorttermCombinedAmount" xlink:to="us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl1" xlink:title="label: DebtLongtermAndShorttermCombinedAmount to us-gaap_DebtLongtermAndShorttermCombinedAmount_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="DebtInstrumentLineItems" xlink:title="DebtInstrumentLineItems" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentLineItems_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentLineItems_lbl">Debt Instrument [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl" xlink:title="label: DebtInstrumentLineItems to us-gaap_DebtInstrumentLineItems_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="DebtInstrumentNameDomain" xlink:title="DebtInstrumentNameDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentNameDomain_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentNameDomain_lbl">Debt Instrument, Name [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl" xlink:title="label: DebtInstrumentNameDomain to us-gaap_DebtInstrumentNameDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="DebtInstrumentFaceAmount" xlink:title="DebtInstrumentFaceAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentFaceAmount_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentFaceAmount_lbl">Face amount of debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:title="label: DebtInstrumentFaceAmount to us-gaap_DebtInstrumentFaceAmount_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="DebtInstrumentInterestRateStatedPercentage" xlink:title="DebtInstrumentInterestRateStatedPercentage" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl">Interest rate percentage</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="DebtInstrumentMaturityDate" xlink:title="DebtInstrumentMaturityDate" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentMaturityDate_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentMaturityDate_lbl">Maturity date of debt</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl" xml:lang="en-US" id="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl">Number of shares each note is convertible to (in shares)</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentConvertibleNumberOfEquityInstruments" xlink:to="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl1" xlink:title="label: DebtInstrumentConvertibleNumberOfEquityInstruments to us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="DebtInstrumentInterestRateEffectivePercentage" xlink:title="DebtInstrumentInterestRateEffectivePercentage" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl1" xml:lang="en-US" id="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl1">Debt Instrument, Interest Rate, Effective Percentage</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtCurrent" xlink:label="DebtCurrent" xlink:title="DebtCurrent" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtCurrent" xlink:to="us-gaap_DebtCurrent_lbl" xlink:title="label: DebtCurrent to us-gaap_DebtCurrent_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_DebtCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_DebtCurrent_lbl1" xml:lang="en-US" id="us-gaap_DebtCurrent_lbl1">Debt, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtCurrent" xlink:to="us-gaap_DebtCurrent_lbl1" xlink:title="label: DebtCurrent to us-gaap_DebtCurrent_lbl1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible" xlink:to="us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_lbl1" xlink:title="label: DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible to us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible_lbl1" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_EmployeeStockOptionMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_EmployeeStockOptionMember_lbl1" xml:lang="en-US" id="us-gaap_EmployeeStockOptionMember_lbl1">Stock Options [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember_lbl1" xlink:title="label: EmployeeStockOptionMember to us-gaap_EmployeeStockOptionMember_lbl1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl" xlink:title="label: EquityComponentDomain to us-gaap_EquityComponentDomain_lbl" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl">Fair Value Financial Instruments</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl1" xml:lang="en-US" id="us-gaap_FairValueMeasurementPolicyPolicyTextBlock_lbl1">Fair Value Measurement, Policy [Policy Text Block]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncomeTaxPolicyTextBlock_lbl" xml:lang="en-US" id="us-gaap_IncomeTaxPolicyTextBlock_lbl">Income Taxes</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl">Other current assets</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl1" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl1">Increase (Decrease) in Other Current Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOtherCurrentAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl1" xlink:title="label: IncreaseDecreaseInOtherCurrentAssets to us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities" xlink:label="IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities" xlink:title="IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities_lbl" xlink:title="label: IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities to us-gaap_IncreaseDecreaseInAccountsPayableAndOtherOperatingLiabilities_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="IncreaseDecreaseInAccountsReceivable" xlink:title="IncreaseDecreaseInAccountsReceivable" />
    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl">Accounts receivable</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl1" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl1">Increase (Decrease) in Accounts Receivable</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_lbl1" xlink:title="label: IncreaseDecreaseInAccountsReceivable to us-gaap_IncreaseDecreaseInAccountsReceivable_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="IncreaseDecreaseInOperatingCapitalAbstract" xlink:title="IncreaseDecreaseInOperatingCapitalAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl">Changes in assets and liabilities:</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl1" xlink:title="label: IncreaseDecreaseInOperatingCapitalAbstract to us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="IncreaseDecreaseInInventories" xlink:title="IncreaseDecreaseInInventories" />
    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_IncreaseDecreaseInInventories_lbl" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInInventories_lbl">Inventories</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_IncreaseDecreaseInInventories_lbl1" xml:lang="en-US" id="us-gaap_IncreaseDecreaseInInventories_lbl1">Increase (Decrease) in Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl1" xlink:title="label: IncreaseDecreaseInInventories to us-gaap_IncreaseDecreaseInInventories_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:title="IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:label="IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:title="IncrementalCommonSharesAttributableToConversionOfDebtSecurities" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:to="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" xlink:title="label: IncrementalCommonSharesAttributableToConversionOfDebtSecurities to us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:label="InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:title="InitialApplicationPeriodCumulativeEffectTransitionAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_lbl" xml:lang="en-US" id="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis_lbl">Initial Application Period Cumulative Effect Transition [Axis]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:label="InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:title="InitialApplicationPeriodCumulativeEffectTransitionDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_lbl" xml:lang="en-US" id="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain_lbl">Initial Application Period Cumulative Effect Transition [Domain]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryDisclosureAbstract_lbl" xml:lang="en-US" id="us-gaap_InventoryDisclosureAbstract_lbl">INVENTORIES [Abstract]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_InventoryDisclosureTextBlock_lbl1">Inventory Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryDisclosureTextBlock" xlink:to="us-gaap_InventoryDisclosureTextBlock_lbl1" xlink:title="label: InventoryDisclosureTextBlock to us-gaap_InventoryDisclosureTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="InventoryPolicyTextBlock" xlink:title="InventoryPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryPolicyTextBlock_lbl" xml:lang="en-US" id="us-gaap_InventoryPolicyTextBlock_lbl">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryPolicyTextBlock" xlink:to="us-gaap_InventoryPolicyTextBlock_lbl" xlink:title="label: InventoryPolicyTextBlock to us-gaap_InventoryPolicyTextBlock_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="InventoryNet" xlink:title="InventoryNet" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="us-gaap_InventoryNet_lbl">Inventories</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="us-gaap_InventoryNet_lbl" xlink:title="label: InventoryNet to us-gaap_InventoryNet_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryNet_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_InventoryNet_lbl1" xml:lang="en-US" id="us-gaap_InventoryNet_lbl1">Inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="us-gaap_InventoryNet_lbl1" xlink:title="label: InventoryNet to us-gaap_InventoryNet_lbl1" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryNet_lbl2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryNet_lbl2" xml:lang="en-US" id="us-gaap_InventoryNet_lbl2">Inventory</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryNet" xlink:to="us-gaap_InventoryNet_lbl2" xlink:title="label: InventoryNet to us-gaap_InventoryNet_lbl2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryWorkInProcess" xlink:label="InventoryWorkInProcess" xlink:title="InventoryWorkInProcess" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryWorkInProcess_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryWorkInProcess_lbl" xml:lang="en-US" id="us-gaap_InventoryWorkInProcess_lbl">Work in process</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryWorkInProcess" xlink:to="us-gaap_InventoryWorkInProcess_lbl" xlink:title="label: InventoryWorkInProcess to us-gaap_InventoryWorkInProcess_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryRawMaterialsNetOfReserves" xlink:label="InventoryRawMaterialsNetOfReserves" xlink:title="InventoryRawMaterialsNetOfReserves" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryRawMaterialsNetOfReserves_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryRawMaterialsNetOfReserves_lbl" xml:lang="en-US" id="us-gaap_InventoryRawMaterialsNetOfReserves_lbl">Raw materials</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryRawMaterialsNetOfReserves" xlink:to="us-gaap_InventoryRawMaterialsNetOfReserves_lbl" xlink:title="label: InventoryRawMaterialsNetOfReserves to us-gaap_InventoryRawMaterialsNetOfReserves_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="LondonInterbankOfferedRateLIBORMember" xlink:title="LondonInterbankOfferedRateLIBORMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xml:lang="en-US" id="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl">LIBOR [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LondonInterbankOfferedRateLIBORMember" xlink:to="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" xlink:title="label: LondonInterbankOfferedRateLIBORMember to us-gaap_LondonInterbankOfferedRateLIBORMember_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl1" xml:lang="en-US" id="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl1">London Interbank Offered Rate (LIBOR) [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LondonInterbankOfferedRateLIBORMember" xlink:to="us-gaap_LondonInterbankOfferedRateLIBORMember_lbl1" xlink:title="label: LondonInterbankOfferedRateLIBORMember to us-gaap_LondonInterbankOfferedRateLIBORMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="LongtermDebtTypeAxis" xlink:title="LongtermDebtTypeAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongtermDebtTypeAxis_lbl" xml:lang="en-US" id="us-gaap_LongtermDebtTypeAxis_lbl">Long-term Debt, Type [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl" xlink:title="label: LongtermDebtTypeAxis to us-gaap_LongtermDebtTypeAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtCurrentAndNoncurrentAbstract" xlink:label="LongtermDebtCurrentAndNoncurrentAbstract" xlink:title="LongtermDebtCurrentAndNoncurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl" xml:lang="en-US" id="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl">Debt [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtCurrentAndNoncurrentAbstract" xlink:to="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl" xlink:title="label: LongtermDebtCurrentAndNoncurrentAbstract to us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl1" xml:lang="en-US" id="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl1">Long-term Debt, Current and Noncurrent [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtCurrentAndNoncurrentAbstract" xlink:to="us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl1" xlink:title="label: LongtermDebtCurrentAndNoncurrentAbstract to us-gaap_LongtermDebtCurrentAndNoncurrentAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="LongtermDebtTypeDomain" xlink:title="LongtermDebtTypeDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongtermDebtTypeDomain_lbl" xml:lang="en-US" id="us-gaap_LongtermDebtTypeDomain_lbl">Long-term Debt, Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl" xlink:title="label: LongtermDebtTypeDomain to us-gaap_LongtermDebtTypeDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandMember" xlink:label="LandMember" xlink:title="LandMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LandMember_lbl" xml:lang="en-US" id="us-gaap_LandMember_lbl">Land [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LandMember" xlink:to="us-gaap_LandMember_lbl" xlink:title="label: LandMember to us-gaap_LandMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="LeaseholdImprovementsMember" xlink:title="LeaseholdImprovementsMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LeaseholdImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LeaseholdImprovementsMember_lbl" xml:lang="en-US" id="us-gaap_LeaseholdImprovementsMember_lbl">Leasehold Improvements [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LeaseholdImprovementsMember" xlink:to="us-gaap_LeaseholdImprovementsMember_lbl" xlink:title="label: LeaseholdImprovementsMember to us-gaap_LeaseholdImprovementsMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure" xlink:label="LiabilitiesFairValueDisclosure" xlink:title="LiabilitiesFairValueDisclosure" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesFairValueDisclosure_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesFairValueDisclosure_lbl">Total liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesFairValueDisclosure" xlink:to="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:title="label: LiabilitiesFairValueDisclosure to us-gaap_LiabilitiesFairValueDisclosure_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="LiabilitiesAbstract" xlink:title="LiabilitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesAbstract_lbl">Liabilities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAbstract" xlink:to="us-gaap_LiabilitiesAbstract_lbl" xlink:title="label: LiabilitiesAbstract to us-gaap_LiabilitiesAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="LiabilitiesAndStockholdersEquityAbstract" xlink:title="LiabilitiesAndStockholdersEquityAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl">LIABILITIES AND EQUITY</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:title="label: LiabilitiesAndStockholdersEquityAbstract to us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl1" xml:lang="en-US" id="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl1">Liabilities and Equity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl1" xlink:title="label: LiabilitiesAndStockholdersEquityAbstract to us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities" xlink:label="Liabilities" xlink:title="Liabilities" />
    <link:label xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_Liabilities_lbl" xml:lang="en-US" id="us-gaap_Liabilities_lbl">Total liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="us-gaap_Liabilities_lbl" xlink:title="label: Liabilities to us-gaap_Liabilities_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_Liabilities_lbl1" xml:lang="en-US" id="us-gaap_Liabilities_lbl1">Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities" xlink:to="us-gaap_Liabilities_lbl1" xlink:title="label: Liabilities to us-gaap_Liabilities_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="LiabilitiesAndStockholdersEquity" xlink:title="LiabilitiesAndStockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesAndStockholdersEquity_lbl">Total liabilities and equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:title="label: LiabilitiesAndStockholdersEquity to us-gaap_LiabilitiesAndStockholdersEquity_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesAndStockholdersEquity_lbl1" xml:lang="en-US" id="us-gaap_LiabilitiesAndStockholdersEquity_lbl1">Liabilities and Equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl1" xlink:title="label: LiabilitiesAndStockholdersEquity to us-gaap_LiabilitiesAndStockholdersEquity_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="LiabilitiesNoncurrent" xlink:title="LiabilitiesNoncurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesNoncurrent_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesNoncurrent_lbl">Non-current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesNoncurrent" xlink:to="us-gaap_LiabilitiesNoncurrent_lbl" xlink:title="label: LiabilitiesNoncurrent to us-gaap_LiabilitiesNoncurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="LiabilitiesCurrentAbstract" xlink:title="LiabilitiesCurrentAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesCurrentAbstract_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesCurrentAbstract_lbl">Current liabilities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:title="label: LiabilitiesCurrentAbstract to us-gaap_LiabilitiesCurrentAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="LiabilitiesCurrent" xlink:title="LiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesCurrent_lbl">Current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl" xlink:title="label: LiabilitiesCurrent to us-gaap_LiabilitiesCurrent_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LiabilitiesCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_LiabilitiesCurrent_lbl1" xml:lang="en-US" id="us-gaap_LiabilitiesCurrent_lbl1">Total current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl1" xlink:title="label: LiabilitiesCurrent to us-gaap_LiabilitiesCurrent_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="LineOfCreditFacilityCurrentBorrowingCapacity" xlink:title="LineOfCreditFacilityCurrentBorrowingCapacity" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xml:lang="en-US" id="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl">Current borrowing capacity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityCurrentBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" xlink:title="label: LineOfCreditFacilityCurrentBorrowingCapacity to us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit" xlink:label="LineOfCredit" xlink:title="LineOfCredit" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LineOfCredit_lbl" xml:lang="en-US" id="us-gaap_LineOfCredit_lbl">Amount outstanding under credit facility</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="LineOfCreditFacilityRemainingBorrowingCapacity" xlink:title="LineOfCreditFacilityRemainingBorrowingCapacity" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xml:lang="en-US" id="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl">Available borrowing capacity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityRemainingBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:title="label: LineOfCreditFacilityRemainingBorrowingCapacity to us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl1" xml:lang="en-US" id="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl1">Line of Credit Facility, Remaining Borrowing Capacity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityRemainingBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl1" xlink:title="label: LineOfCreditFacilityRemainingBorrowingCapacity to us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtByMaturityAbstract" xlink:label="LongTermDebtByMaturityAbstract" xlink:title="LongTermDebtByMaturityAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtByMaturityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtByMaturityAbstract_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtByMaturityAbstract_lbl">Long-term Debt, Fiscal Year Maturity [Abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="LongTermDebtNoncurrent" xlink:title="LongTermDebtNoncurrent" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LongTermDebtNoncurrent_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtNoncurrent_lbl1">Long-term debt noncurrent</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtNoncurrent_lbl2" xml:lang="en-US" id="us-gaap_LongTermDebtNoncurrent_lbl2">Long-term Debt, Excluding Current Maturities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtNoncurrent" xlink:to="us-gaap_LongTermDebtNoncurrent_lbl2" xlink:title="label: LongTermDebtNoncurrent to us-gaap_LongTermDebtNoncurrent_lbl2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_lbl">2023</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl">2020 (all within one year of July 28, 2019)</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl">2022</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="LongTermDebtCurrent" xlink:title="LongTermDebtCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtCurrent_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtCurrent_lbl">Current portion of long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl" xlink:title="label: LongTermDebtCurrent to us-gaap_LongTermDebtCurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl">2021</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_lbl">2024</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl">2025</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xlink:title="label: LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive to us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl1">Long-term Debt, Maturities, Repayments of Principal after Year Five</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl1" xlink:title="label: LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive to us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:label="MachineryAndEquipmentMember" xlink:title="MachineryAndEquipmentMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MachineryAndEquipmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_MachineryAndEquipmentMember_lbl" xml:lang="en-US" id="us-gaap_MachineryAndEquipmentMember_lbl">Machinery and Equipment [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MachineryAndEquipmentMember" xlink:to="us-gaap_MachineryAndEquipmentMember_lbl" xlink:title="label: MachineryAndEquipmentMember to us-gaap_MachineryAndEquipmentMember_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MachineryAndEquipmentMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_MachineryAndEquipmentMember_lbl1" xml:lang="en-US" id="us-gaap_MachineryAndEquipmentMember_lbl1">Machinery and Equipment [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MachineryAndEquipmentMember" xlink:to="us-gaap_MachineryAndEquipmentMember_lbl1" xlink:title="label: MachineryAndEquipmentMember to us-gaap_MachineryAndEquipmentMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:label="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:title="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xml:lang="en-US" id="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl">Dividends to noncontrolling interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:to="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:title="label: MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders to us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl1" xml:lang="en-US" id="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl1">Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:to="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl1" xlink:title="label: MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders to us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterest" xlink:label="MinorityInterest" xlink:title="MinorityInterest" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MinorityInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_MinorityInterest_lbl" xml:lang="en-US" id="us-gaap_MinorityInterest_lbl">Noncontrolling interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinorityInterest" xlink:to="us-gaap_MinorityInterest_lbl" xlink:title="label: MinorityInterest to us-gaap_MinorityInterest_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:label="MinorityInterestDecreaseFromRedemptions" xlink:title="MinorityInterestDecreaseFromRedemptions" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl" xml:lang="en-US" id="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl">Repurchase of common stock by subsidiary</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinorityInterestDecreaseFromRedemptions" xlink:to="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl" xlink:title="label: MinorityInterestDecreaseFromRedemptions to us-gaap_MinorityInterestDecreaseFromRedemptions_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl1" xml:lang="en-US" id="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl1">Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinorityInterestDecreaseFromRedemptions" xlink:to="us-gaap_MinorityInterestDecreaseFromRedemptions_lbl1" xlink:title="label: MinorityInterestDecreaseFromRedemptions to us-gaap_MinorityInterestDecreaseFromRedemptions_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToParentDiluted" xlink:label="NetIncomeLossAttributableToParentDiluted" xlink:title="NetIncomeLossAttributableToParentDiluted" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl" xml:lang="en-US" id="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl">Earnings used for diluted earnings per share</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAttributableToParentDiluted" xlink:to="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl" xlink:title="label: NetIncomeLossAttributableToParentDiluted to us-gaap_NetIncomeLossAttributableToParentDiluted_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl1" xml:lang="en-US" id="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl1">Net Income (Loss) Attributable to Parent, Diluted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAttributableToParentDiluted" xlink:to="us-gaap_NetIncomeLossAttributableToParentDiluted_lbl1" xlink:title="label: NetIncomeLossAttributableToParentDiluted to us-gaap_NetIncomeLossAttributableToParentDiluted_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="NetCashProvidedByUsedInOperatingActivities" xlink:title="NetCashProvidedByUsedInOperatingActivities" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl">Net cash provided by operating activities</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl1" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl1">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl1" xlink:title="label: NetCashProvidedByUsedInOperatingActivities to us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl1" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl">Net cash used in investing activities</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl1" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl1">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl1" xlink:title="label: NetCashProvidedByUsedInInvestingActivities to us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInInvestingActivitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl">Cash flows from investing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:title="label: NetCashProvidedByUsedInInvestingActivitiesAbstract to us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInOperatingActivitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl">Cash flows from operating activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:title="label: NetCashProvidedByUsedInOperatingActivitiesAbstract to us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="NetCashProvidedByUsedInFinancingActivities" xlink:title="NetCashProvidedByUsedInFinancingActivities" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl">Net cash (used in) provided by financing activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:title="label: NetCashProvidedByUsedInFinancingActivities to us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl1" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl1">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl1" xlink:title="label: NetCashProvidedByUsedInFinancingActivities to us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="NetIncomeLoss" xlink:title="NetIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US" id="us-gaap_NetIncomeLoss_lbl">Net income attributable to Photronics, Inc. shareholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl" xlink:title="label: NetIncomeLoss to us-gaap_NetIncomeLoss_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_NetIncomeLoss_lbl1" xml:lang="en-US" id="us-gaap_NetIncomeLoss_lbl1">Income attributable to Photronics, Inc. shareholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl1" xlink:title="label: NetIncomeLoss to us-gaap_NetIncomeLoss_lbl1" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetIncomeLoss_lbl2" xml:lang="en-US" id="us-gaap_NetIncomeLoss_lbl2">Net income attributable to Photronics, Inc. shareholders</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl2" xlink:title="label: NetIncomeLoss to us-gaap_NetIncomeLoss_lbl2" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:title="NetCashProvidedByUsedInFinancingActivitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl">Cash flows from financing activities:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:title="label: NetCashProvidedByUsedInFinancingActivitiesAbstract to us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="NetIncomeLossAttributableToNoncontrollingInterest" xlink:title="NetIncomeLossAttributableToNoncontrollingInterest" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl">Net income attributable to noncontrolling interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAttributableToNoncontrollingInterest" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xlink:title="label: NetIncomeLossAttributableToNoncontrollingInterest to us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl1" xml:lang="en-US" id="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl1">Noncontrolling interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetIncomeLossAttributableToNoncontrollingInterest" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl1" xlink:title="label: NetIncomeLossAttributableToNoncontrollingInterest to us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:title="NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_lbl" xml:lang="en-US" id="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_lbl">New Accounting Pronouncements or Change in Accounting Principle [Line Items]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:title="NewAccountingPronouncementsPolicyPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xml:lang="en-US" id="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl">Recent Accounting Pronouncements</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:title="label: NewAccountingPronouncementsPolicyPolicyTextBlock to us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementMember" xlink:label="NewAccountingPronouncementMember" xlink:title="NewAccountingPronouncementMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NewAccountingPronouncementMember_lbl" xml:lang="en-US" id="us-gaap_NewAccountingPronouncementMember_lbl">Adjustments for New Accounting Pronouncement [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:label="NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:title="NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract_lbl" xml:lang="en-US" id="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract_lbl">RECENT ACCOUNTING PRONOUNCEMENTS [Abstract]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract_lbl1" xml:lang="en-US" id="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract_lbl1">Adoption of New Accounting Standard [Abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:title="NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_lbl1" xlink:title="label: NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1 to us-gaap_NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="NonoperatingIncomeExpenseAbstract" xlink:title="NonoperatingIncomeExpenseAbstract" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl">Other comprehensive (loss) income, net of tax of $0:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:title="label: OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract to us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl1" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl1">Other Comprehensive Income (Loss), Net of Tax [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl1" xlink:title="label: OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract to us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="OtherNonoperatingIncomeExpense" xlink:title="OtherNonoperatingIncomeExpense" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherNonoperatingIncomeExpense_lbl" xml:lang="en-US" id="us-gaap_OtherNonoperatingIncomeExpense_lbl">Interest income and other income (expense), net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherNonoperatingIncomeExpense" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:title="label: OtherNonoperatingIncomeExpense to us-gaap_OtherNonoperatingIncomeExpense_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="OtherLiabilitiesNoncurrent" xlink:title="OtherLiabilitiesNoncurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_OtherLiabilitiesNoncurrent_lbl" xml:lang="en-US" id="us-gaap_OtherLiabilitiesNoncurrent_lbl">Other liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:title="label: OtherLiabilitiesNoncurrent to us-gaap_OtherLiabilitiesNoncurrent_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherLiabilitiesNoncurrent_lbl1" xml:lang="en-US" id="us-gaap_OtherLiabilitiesNoncurrent_lbl1">Other Liabilities, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl1" xlink:title="label: OtherLiabilitiesNoncurrent to us-gaap_OtherLiabilitiesNoncurrent_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:label="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:title="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl">Less: other comprehensive income (loss) attributable to noncontrolling interests</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" xlink:title="label: OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest to us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl1" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl1">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl1" xlink:title="label: OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest to us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="PaymentsForProceedsFromOtherInvestingActivities" xlink:title="PaymentsForProceedsFromOtherInvestingActivities" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl" xml:lang="en-US" id="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsForProceedsFromOtherInvestingActivities" xlink:to="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl" xlink:title="label: PaymentsForProceedsFromOtherInvestingActivities to us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl1" xml:lang="en-US" id="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl1">Payments for (Proceeds from) Other Investing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsForProceedsFromOtherInvestingActivities" xlink:to="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl1" xlink:title="label: PaymentsForProceedsFromOtherInvestingActivities to us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="PaymentsForRepurchaseOfCommonStock" xlink:title="PaymentsForRepurchaseOfCommonStock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xml:lang="en-US" id="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl">Purchase of treasury stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:title="label: PaymentsForRepurchaseOfCommonStock to us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl1" xml:lang="en-US" id="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl1">Payments for Repurchase of Common Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsForRepurchaseOfCommonStock" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl1" xlink:title="label: PaymentsForRepurchaseOfCommonStock to us-gaap_PaymentsForRepurchaseOfCommonStock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividendsMinorityInterest" xlink:label="PaymentsOfDividendsMinorityInterest" xlink:title="PaymentsOfDividendsMinorityInterest" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividendsMinorityInterest_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_PaymentsOfDividendsMinorityInterest_lbl" xml:lang="en-US" id="us-gaap_PaymentsOfDividendsMinorityInterest_lbl">Dividends paid to noncontrolling interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDividendsMinorityInterest" xlink:to="us-gaap_PaymentsOfDividendsMinorityInterest_lbl" xlink:title="label: PaymentsOfDividendsMinorityInterest to us-gaap_PaymentsOfDividendsMinorityInterest_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividendsMinorityInterest_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsOfDividendsMinorityInterest_lbl1" xml:lang="en-US" id="us-gaap_PaymentsOfDividendsMinorityInterest_lbl1">Payments of Ordinary Dividends, Noncontrolling Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsOfDividendsMinorityInterest" xlink:to="us-gaap_PaymentsOfDividendsMinorityInterest_lbl1" xlink:title="label: PaymentsOfDividendsMinorityInterest to us-gaap_PaymentsOfDividendsMinorityInterest_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="PaymentsToAcquirePropertyPlantAndEquipment" xlink:title="PaymentsToAcquirePropertyPlantAndEquipment" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xml:lang="en-US" id="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl">Purchases of property, plant and equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:title="label: PaymentsToAcquirePropertyPlantAndEquipment to us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl1" xml:lang="en-US" id="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl1">Payments to Acquire Property, Plant, and Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl1" xlink:title="label: PaymentsToAcquirePropertyPlantAndEquipment to us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:label="PortionAtFairValueFairValueDisclosureMember" xlink:title="PortionAtFairValueFairValueDisclosureMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xml:lang="en-US" id="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl">Portion at Fair Value Measurement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PortionAtFairValueFairValueDisclosureMember" xlink:to="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:title="label: PortionAtFairValueFairValueDisclosureMember to us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="PreferredStockParOrStatedValuePerShare" xlink:title="PreferredStockParOrStatedValuePerShare" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xml:lang="en-US" id="us-gaap_PreferredStockParOrStatedValuePerShare_lbl">Preferred stock, par value (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockParOrStatedValuePerShare" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:title="label: PreferredStockParOrStatedValuePerShare to us-gaap_PreferredStockParOrStatedValuePerShare_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="PreferredStockSharesIssued" xlink:title="PreferredStockSharesIssued" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PreferredStockSharesIssued_lbl" xml:lang="en-US" id="us-gaap_PreferredStockSharesIssued_lbl">Preferred stock, shares issued (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl" xlink:title="label: PreferredStockSharesIssued to us-gaap_PreferredStockSharesIssued_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="PreferredStockValue" xlink:title="PreferredStockValue" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PreferredStockValue_lbl" xml:lang="en-US" id="us-gaap_PreferredStockValue_lbl">Preferred stock, $0.01 par value, 2,000 shares authorized, none issued and outstanding</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockValue" xlink:to="us-gaap_PreferredStockValue_lbl" xlink:title="label: PreferredStockValue to us-gaap_PreferredStockValue_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="PreferredStockSharesOutstanding" xlink:title="PreferredStockSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PreferredStockSharesOutstanding_lbl" xml:lang="en-US" id="us-gaap_PreferredStockSharesOutstanding_lbl">Preferred stock, shares outstanding (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesOutstanding" xlink:to="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:title="label: PreferredStockSharesOutstanding to us-gaap_PreferredStockSharesOutstanding_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="PreferredStockSharesAuthorized" xlink:title="PreferredStockSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PreferredStockSharesAuthorized_lbl" xml:lang="en-US" id="us-gaap_PreferredStockSharesAuthorized_lbl">Preferred stock, shares authorized (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:title="label: PreferredStockSharesAuthorized to us-gaap_PreferredStockSharesAuthorized_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="PrepaidExpenseCurrent" xlink:title="PrepaidExpenseCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PrepaidExpenseCurrent_lbl" xml:lang="en-US" id="us-gaap_PrepaidExpenseCurrent_lbl">Prepaid expenses</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PrepaidExpenseCurrent" xlink:to="us-gaap_PrepaidExpenseCurrent_lbl" xlink:title="label: PrepaidExpenseCurrent to us-gaap_PrepaidExpenseCurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="ProceedsFromPaymentsForOtherFinancingActivities" xlink:title="ProceedsFromPaymentsForOtherFinancingActivities" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromPaymentsForOtherFinancingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl" xlink:title="label: ProceedsFromPaymentsForOtherFinancingActivities to us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl1" xml:lang="en-US" id="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl1">Proceeds from (Payments for) Other Financing Activities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromPaymentsForOtherFinancingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl1" xlink:title="label: ProceedsFromPaymentsForOtherFinancingActivities to us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfDebt" xlink:label="ProceedsFromIssuanceOfDebt" xlink:title="ProceedsFromIssuanceOfDebt" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromIssuanceOfDebt_lbl">Proceeds from debt</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentGross_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentGross_lbl">Property, plant and equipment, gross</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="PropertyPlantAndEquipmentLineItems" xlink:title="PropertyPlantAndEquipmentLineItems" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentLineItems_lbl">Property, Plant and Equipment [Line Items]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="PropertyPlantAndEquipmentDisclosureTextBlock" xlink:title="PropertyPlantAndEquipmentDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl">PROPERTY, PLANT AND EQUIPMENT</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl1">Property, Plant and Equipment Disclosure [Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="PropertyPlantAndEquipmentTextBlock" xlink:title="PropertyPlantAndEquipmentTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl">Property, Plant and Equipment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:title="label: PropertyPlantAndEquipmentTextBlock to us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="PropertyPlantAndEquipmentAbstract" xlink:title="PropertyPlantAndEquipmentAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentAbstract_lbl">PROPERTY, PLANT AND EQUIPMENT [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xlink:title="label: PropertyPlantAndEquipmentAbstract to us-gaap_PropertyPlantAndEquipmentAbstract_lbl" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentNet_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentNet_lbl">Property, plant and equipment, net</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xlink:label="PropertyPlantAndEquipmentNetByTypeAbstract" xlink:title="PropertyPlantAndEquipmentNetByTypeAbstract" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl1" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl1">Property, Plant and Equipment, Net, by Type [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNetByTypeAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl1" xlink:title="label: PropertyPlantAndEquipmentNetByTypeAbstract to us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl" xlink:title="label: RetainedEarningsMember to us-gaap_RetainedEarningsMember_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RetainedEarningsMember_lbl1" xml:lang="en-US" id="us-gaap_RetainedEarningsMember_lbl1">Retained Earnings [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl1" xlink:title="label: RetainedEarningsMember to us-gaap_RetainedEarningsMember_lbl1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:title="label: RetainedEarningsAccumulatedDeficit to us-gaap_RetainedEarningsAccumulatedDeficit_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" xlink:label="RevenueFromContractWithCustomerPolicyTextBlock" xlink:title="RevenueFromContractWithCustomerPolicyTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" xml:lang="en-US" id="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl">Revenue</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerPolicyTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" xlink:title="label: RevenueFromContractWithCustomerPolicyTextBlock to us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerPolicyTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl1" xlink:title="label: RevenueFromContractWithCustomerPolicyTextBlock to us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerAbstract" xlink:label="RevenueFromContractWithCustomerAbstract" xlink:title="RevenueFromContractWithCustomerAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RevenueFromContractWithCustomerAbstract_lbl" xml:lang="en-US" id="us-gaap_RevenueFromContractWithCustomerAbstract_lbl">REVENUE [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_RevenueFromContractWithCustomerAbstract_lbl" xlink:title="label: RevenueFromContractWithCustomerAbstract to us-gaap_RevenueFromContractWithCustomerAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems" xlink:label="RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems" xlink:title="RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems" />
    <link:label xlink:type="resource" xlink:label="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_lbl" xml:lang="en-US" id="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_lbl">Revenue, Initial Application Period Cumulative Effect Transition [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems" xlink:to="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_lbl" xlink:title="label: RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems to us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionLineItems_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:label="RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:title="RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" />
    <link:label xlink:type="resource" xlink:label="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_lbl" xml:lang="en-US" id="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_lbl">Revenue, Initial Application Period Cumulative Effect Transition [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueInitialApplicationPeriodCumulativeEffectTransitionTable" xlink:to="us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_lbl" xlink:title="label: RevenueInitialApplicationPeriodCumulativeEffectTransitionTable to us-gaap_RevenueInitialApplicationPeriodCumulativeEffectTransitionTable_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="RevenueFromContractWithCustomerTextBlock" xlink:title="RevenueFromContractWithCustomerTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerTextBlock_lbl" xlink:title="label: RevenueFromContractWithCustomerTextBlock to us-gaap_RevenueFromContractWithCustomerTextBlock_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueFromContractWithCustomerTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerTextBlock_lbl1" xlink:title="label: RevenueFromContractWithCustomerTextBlock to us-gaap_RevenueFromContractWithCustomerTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="RevenueFromContractWithCustomerExcludingAssessedTax" xlink:title="RevenueFromContractWithCustomerExcludingAssessedTax" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl1" xml:lang="en-US" id="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl1">Revenue</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl1" xml:lang="en-US" id="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl1">Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl1" xlink:title="label: SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1 to us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_lbl1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl1" xlink:title="label: SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod to us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl1" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl">Weighted average exercise price, Outstanding at end of period (in dollars per share)</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xml:lang="en-US" id="us-gaap_StatementOfStockholdersEquityAbstract_lbl">Condensed Consolidated Statements of Equity (unaudited) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:title="label: StatementOfStockholdersEquityAbstract to us-gaap_StatementOfStockholdersEquityAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramExpirationDate" xlink:label="StockRepurchaseProgramExpirationDate" xlink:title="StockRepurchaseProgramExpirationDate" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_StockRepurchaseProgramExpirationDate_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockRepurchaseProgramExpirationDate_lbl1" xml:lang="en-US" id="us-gaap_StockRepurchaseProgramExpirationDate_lbl1">Stock Repurchase Program Expiration Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramExpirationDate" xlink:to="us-gaap_StockRepurchaseProgramExpirationDate_lbl1" xlink:title="label: StockRepurchaseProgramExpirationDate to us-gaap_StockRepurchaseProgramExpirationDate_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:label="StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:title="StockIssuedDuringPeriodSharesShareBasedCompensation" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xml:lang="en-US" id="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl">Sale of common stock through employee stock option and purchase plans (in shares)</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl1" xml:lang="en-US" id="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl1">Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl1" xlink:title="label: StockIssuedDuringPeriodSharesShareBasedCompensation to us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:title="StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="StockRepurchaseProgramAuthorizedAmount1" xlink:title="StockRepurchaseProgramAuthorizedAmount1" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:title="StockIssuedDuringPeriodValueShareBasedCompensation" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xml:lang="en-US" id="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl">Sale of common stock through employee stock option and purchase plans</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="VariableRateDomain" xlink:title="VariableRateDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableRateDomain_lbl" xml:lang="en-US" id="us-gaap_VariableRateDomain_lbl">Variable Rate [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableRateDomain" xlink:to="us-gaap_VariableRateDomain_lbl" xlink:title="label: VariableRateDomain to us-gaap_VariableRateDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityDisclosureTextBlock" xlink:label="VariableInterestEntityDisclosureTextBlock" xlink:title="VariableInterestEntityDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl">PDMCX JOINT VENTURE</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityDisclosureTextBlock" xlink:to="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl" xlink:title="label: VariableInterestEntityDisclosureTextBlock to us-gaap_VariableInterestEntityDisclosureTextBlock_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl1" xml:lang="en-US" id="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl1">Variable Interest Entity Disclosure [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityDisclosureTextBlock" xlink:to="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl1" xlink:title="label: VariableInterestEntityDisclosureTextBlock to us-gaap_VariableInterestEntityDisclosureTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss" xlink:label="VariableInterestEntityInitialConsolidationGainOrLoss" xlink:title="VariableInterestEntityInitialConsolidationGainOrLoss" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl">Gain (loss) on consolidation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityInitialConsolidationGainOrLoss" xlink:to="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl" xlink:title="label: VariableInterestEntityInitialConsolidationGainOrLoss to us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl1" xml:lang="en-US" id="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl1">Variable Interest Entity, Initial Consolidation, Gain (Loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityInitialConsolidationGainOrLoss" xlink:to="us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl1" xlink:title="label: VariableInterestEntityInitialConsolidationGainOrLoss to us-gaap_VariableInterestEntityInitialConsolidationGainOrLoss_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss" xlink:label="VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss" xlink:title="VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss_lbl">Operating (loss)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss" xlink:to="us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss_lbl" xlink:title="label: VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss to us-gaap_VariableInterestEntityActivityBetweenVIEAndEntityOperatingIncomeOrLoss_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="VariableRateAxis" xlink:title="VariableRateAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableRateAxis_lbl" xml:lang="en-US" id="us-gaap_VariableRateAxis_lbl">Variable Rate [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableRateAxis" xlink:to="us-gaap_VariableRateAxis_lbl" xlink:title="label: VariableRateAxis to us-gaap_VariableRateAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount" xlink:label="VariableInterestEntityEntityMaximumLossExposureAmount" xlink:title="VariableInterestEntityEntityMaximumLossExposureAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl">Maximum exposure to loss</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityEntityMaximumLossExposureAmount" xlink:to="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xlink:title="label: VariableInterestEntityEntityMaximumLossExposureAmount to us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount" xlink:label="VariableInterestEntityFinancialOrOtherSupportAmount" xlink:title="VariableInterestEntityFinancialOrOtherSupportAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount_lbl">Financial or other support, amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityFinancialOrOtherSupportAmount" xlink:to="us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount_lbl" xlink:title="label: VariableInterestEntityFinancialOrOtherSupportAmount to us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityLineItems" xlink:label="VariableInterestEntityLineItems" xlink:title="VariableInterestEntityLineItems" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityLineItems_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityLineItems_lbl">Variable Interest Entity [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityLineItems" xlink:to="us-gaap_VariableInterestEntityLineItems_lbl" xlink:title="label: VariableInterestEntityLineItems to us-gaap_VariableInterestEntityLineItems_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityPrimaryBeneficiaryMember" xlink:label="VariableInterestEntityPrimaryBeneficiaryMember" xlink:title="VariableInterestEntityPrimaryBeneficiaryMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl">Photronics Interest [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityPrimaryBeneficiaryMember" xlink:to="us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl" xlink:title="label: VariableInterestEntityPrimaryBeneficiaryMember to us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityOwnershipPercentage" xlink:label="VariableInterestEntityOwnershipPercentage" xlink:title="VariableInterestEntityOwnershipPercentage" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityOwnershipPercentage_lbl">Ownership percentage</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityOwnershipPercentage" xlink:to="us-gaap_VariableInterestEntityOwnershipPercentage_lbl" xlink:title="label: VariableInterestEntityOwnershipPercentage to us-gaap_VariableInterestEntityOwnershipPercentage_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember" xlink:label="VariableInterestEntityNotPrimaryBeneficiaryMember" xlink:title="VariableInterestEntityNotPrimaryBeneficiaryMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl">DNP [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityNotPrimaryBeneficiaryMember" xlink:to="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xlink:title="label: VariableInterestEntityNotPrimaryBeneficiaryMember to us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary" xlink:label="VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary" xlink:title="VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary_lbl">Methodology use for determining whether enterprise is primary beneficiary</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary" xlink:to="us-gaap_VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary_lbl" xlink:title="label: VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary to us-gaap_VariableInterestEntityMethodologyForDeterminingWhetherEnterpriseIsPrimaryBeneficiary_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:label="WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:title="WeightedAverageNumberDilutedSharesOutstandingAdjustment" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl">Potentially dilutive common shares (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:title="label: WeightedAverageNumberDilutedSharesOutstandingAdjustment to us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl1" xml:lang="en-US" id="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl1">Weighted Average Number Diluted Shares Outstanding Adjustment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl1" xlink:title="label: WeightedAverageNumberDilutedSharesOutstandingAdjustment to us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="WeightedAverageNumberOfSharesOutstandingBasic" xlink:title="WeightedAverageNumberOfSharesOutstandingBasic" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl">Basic (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:title="label: WeightedAverageNumberOfSharesOutstandingBasic to us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl1" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl1">Weighted-average common shares used for basic earnings per share (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl1" xlink:title="label: WeightedAverageNumberOfSharesOutstandingBasic to us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:title="WeightedAverageNumberOfDilutedSharesOutstanding" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl">Diluted (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:title="label: WeightedAverageNumberOfDilutedSharesOutstanding to us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl1" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl1">Weighted-average common shares used for diluted earnings per share (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl1" xlink:title="label: WeightedAverageNumberOfDilutedSharesOutstanding to us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:label="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:title="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl">Effect of dilutive securities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" xlink:title="label: WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract to us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl1" xml:lang="en-US" id="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl1">Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl1" xlink:title="label: WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract to us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="WeightedAverageNumberOfSharesOutstandingAbstract" xlink:title="WeightedAverageNumberOfSharesOutstandingAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl">Weighted-average number of common shares outstanding:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:title="label: WeightedAverageNumberOfSharesOutstandingAbstract to us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl1" xml:lang="en-US" id="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl1">Weighted-average common shares computations [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WeightedAverageNumberOfSharesOutstandingAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl1" xlink:title="label: WeightedAverageNumberOfSharesOutstandingAbstract to us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:label="ConsolidatedEntitiesDomain" xlink:title="ConsolidatedEntitiesDomain" />
    <link:label xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_ConsolidatedEntitiesDomain_lbl" xml:lang="en-US" id="srt_ConsolidatedEntitiesDomain_lbl">Consolidated Entities [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidatedEntitiesDomain" xlink:to="srt_ConsolidatedEntitiesDomain_lbl" xlink:title="label: ConsolidatedEntitiesDomain to srt_ConsolidatedEntitiesDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:label="ConsolidatedEntitiesAxis" xlink:title="ConsolidatedEntitiesAxis" />
    <link:label xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_ConsolidatedEntitiesAxis_lbl" xml:lang="en-US" id="srt_ConsolidatedEntitiesAxis_lbl">Consolidated Entities [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesAxis_lbl" xlink:title="label: ConsolidatedEntitiesAxis to srt_ConsolidatedEntitiesAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EuropeMember" xlink:label="EuropeMember" xlink:title="EuropeMember" />
    <link:label xlink:type="resource" xlink:label="srt_EuropeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_EuropeMember_lbl" xml:lang="en-US" id="srt_EuropeMember_lbl">Europe [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EuropeMember" xlink:to="srt_EuropeMember_lbl" xlink:title="label: EuropeMember to srt_EuropeMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="MaximumMember" xlink:title="MaximumMember" />
    <link:label xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_MaximumMember_lbl" xml:lang="en-US" id="srt_MaximumMember_lbl">Maximum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MaximumMember" xlink:to="srt_MaximumMember_lbl" xlink:title="label: MaximumMember to srt_MaximumMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="MinimumMember" xlink:title="MinimumMember" />
    <link:label xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_MinimumMember_lbl" xml:lang="en-US" id="srt_MinimumMember_lbl">Minimum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MinimumMember" xlink:to="srt_MinimumMember_lbl" xlink:title="label: MinimumMember to srt_MinimumMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="ProductsAndServicesDomain" xlink:title="ProductsAndServicesDomain" />
    <link:label xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_ProductsAndServicesDomain_lbl" xml:lang="en-US" id="srt_ProductsAndServicesDomain_lbl">Product and Service [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductsAndServicesDomain" xlink:to="srt_ProductsAndServicesDomain_lbl" xlink:title="label: ProductsAndServicesDomain to srt_ProductsAndServicesDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="ProductOrServiceAxis" xlink:title="ProductOrServiceAxis" />
    <link:label xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_ProductOrServiceAxis_lbl" xml:lang="en-US" id="srt_ProductOrServiceAxis_lbl">Product and Service [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductOrServiceAxis" xlink:to="srt_ProductOrServiceAxis_lbl" xlink:title="label: ProductOrServiceAxis to srt_ProductOrServiceAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="RangeMember" xlink:title="RangeMember" />
    <link:label xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_RangeMember_lbl" xml:lang="en-US" id="srt_RangeMember_lbl">Range [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RangeMember" xlink:to="srt_RangeMember_lbl" xlink:title="label: RangeMember to srt_RangeMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="RangeAxis" xlink:title="RangeAxis" />
    <link:label xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_RangeAxis_lbl" xml:lang="en-US" id="srt_RangeAxis_lbl">Range [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RangeAxis" xlink:to="srt_RangeAxis_lbl" xlink:title="label: RangeAxis to srt_RangeAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScenarioUnspecifiedDomain" xlink:label="ScenarioUnspecifiedDomain" xlink:title="ScenarioUnspecifiedDomain" />
    <link:label xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_ScenarioUnspecifiedDomain_lbl" xml:lang="en-US" id="srt_ScenarioUnspecifiedDomain_lbl">Scenario, Unspecified [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain_lbl" xlink:title="label: ScenarioUnspecifiedDomain to srt_ScenarioUnspecifiedDomain_lbl" />
    <link:label xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="srt_ScenarioUnspecifiedDomain_lbl1" xml:lang="en-US" id="srt_ScenarioUnspecifiedDomain_lbl1">Scenario [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ScenarioUnspecifiedDomain" xlink:to="srt_ScenarioUnspecifiedDomain_lbl1" xlink:title="label: ScenarioUnspecifiedDomain to srt_ScenarioUnspecifiedDomain_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="SegmentGeographicalDomain" xlink:title="SegmentGeographicalDomain" />
    <link:label xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_SegmentGeographicalDomain_lbl" xml:lang="en-US" id="srt_SegmentGeographicalDomain_lbl">Geographical [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain_lbl" xlink:title="label: SegmentGeographicalDomain to srt_SegmentGeographicalDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementScenarioAxis" xlink:label="StatementScenarioAxis" xlink:title="StatementScenarioAxis" />
    <link:label xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_StatementScenarioAxis_lbl" xml:lang="en-US" id="srt_StatementScenarioAxis_lbl">Scenario [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementScenarioAxis" xlink:to="srt_StatementScenarioAxis_lbl" xlink:title="label: StatementScenarioAxis to srt_StatementScenarioAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="StatementGeographicalAxis" xlink:title="StatementGeographicalAxis" />
    <link:label xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="srt_StatementGeographicalAxis_lbl" xml:lang="en-US" id="srt_StatementGeographicalAxis_lbl">Geographical [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis_lbl" xlink:title="label: StatementGeographicalAxis to srt_StatementGeographicalAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CN" xlink:label="CN" xlink:title="CN" />
    <link:label xlink:type="resource" xlink:label="country_CN_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="country_CN_lbl" xml:lang="en-US" id="country_CN_lbl">China [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CN" xlink:to="country_CN_lbl" xlink:title="label: CN to country_CN_lbl" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_KR" xlink:label="KR" xlink:title="KR" />
    <link:label xlink:type="resource" xlink:label="country_KR_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="country_KR_lbl" xml:lang="en-US" id="country_KR_lbl">Korea [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KR" xlink:to="country_KR_lbl" xlink:title="label: KR to country_KR_lbl" />
    <link:label xlink:type="resource" xlink:label="country_KR_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="country_KR_lbl1" xml:lang="en-US" id="country_KR_lbl1">Korea [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="KR" xlink:to="country_KR_lbl1" xlink:title="label: KR to country_KR_lbl1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_TW" xlink:label="TW" xlink:title="TW" />
    <link:label xlink:type="resource" xlink:label="country_TW_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="country_TW_lbl" xml:lang="en-US" id="country_TW_lbl">Taiwan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TW" xlink:to="country_TW_lbl" xlink:title="label: TW to country_TW_lbl" />
    <link:label xlink:type="resource" xlink:label="country_TW_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="country_TW_lbl1" xml:lang="en-US" id="country_TW_lbl1">Taiwan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TW" xlink:to="country_TW_lbl1" xlink:title="label: TW to country_TW_lbl1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:label="US" xlink:title="US" />
    <link:label xlink:type="resource" xlink:label="country_US_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="country_US_lbl" xml:lang="en-US" id="country_US_lbl">United States [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="US" xlink:to="country_US_lbl" xlink:title="label: US to country_US_lbl" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_PeriodOfWarranty" xlink:label="PeriodOfWarranty" xlink:title="PeriodOfWarranty" />
    <link:label xlink:type="resource" xlink:label="plab_PeriodOfWarranty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_PeriodOfWarranty_lbl" xml:lang="en-US" id="plab_PeriodOfWarranty_lbl">Represents the period of warranty coverage of products sold.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodOfWarranty" xlink:to="plab_PeriodOfWarranty_lbl" xlink:title="label: PeriodOfWarranty to plab_PeriodOfWarranty_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_PeriodOfWarranty_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_PeriodOfWarranty_lbl1" xml:lang="en-US" id="plab_PeriodOfWarranty_lbl1">Period of warranty</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodOfWarranty" xlink:to="plab_PeriodOfWarranty_lbl1" xlink:title="label: PeriodOfWarranty to plab_PeriodOfWarranty_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_PeriodOfWarranty_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_PeriodOfWarranty_lbl2" xml:lang="en-US" id="plab_PeriodOfWarranty_lbl2">Product warranty period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PeriodOfWarranty" xlink:to="plab_PeriodOfWarranty_lbl2" xlink:title="label: PeriodOfWarranty to plab_PeriodOfWarranty_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ProductWarrantyAbstract" xlink:label="ProductWarrantyAbstract" xlink:title="ProductWarrantyAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_ProductWarrantyAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ProductWarrantyAbstract_lbl1" xml:lang="en-US" id="plab_ProductWarrantyAbstract_lbl1">Product Warranty [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductWarrantyAbstract" xlink:to="plab_ProductWarrantyAbstract_lbl1" xlink:title="label: ProductWarrantyAbstract to plab_ProductWarrantyAbstract_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ProductWarrantyAbstract_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ProductWarrantyAbstract_lbl2" xml:lang="en-US" id="plab_ProductWarrantyAbstract_lbl2">Product Warranty [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductWarrantyAbstract" xlink:to="plab_ProductWarrantyAbstract_lbl2" xlink:title="label: ProductWarrantyAbstract to plab_ProductWarrantyAbstract_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod" xlink:label="CustomerOrdersExpectedTimingOfSatisfactionPeriod" xlink:title="CustomerOrdersExpectedTimingOfSatisfactionPeriod" />
    <link:label xlink:type="resource" xlink:label="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl" xml:lang="en-US" id="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl">Period in which customer order is expected to be fulfilled, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerOrdersExpectedTimingOfSatisfactionPeriod" xlink:to="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl" xlink:title="label: CustomerOrdersExpectedTimingOfSatisfactionPeriod to plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl1" xml:lang="en-US" id="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl1">Customer orders, Expected Timing of Satisfaction, Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerOrdersExpectedTimingOfSatisfactionPeriod" xlink:to="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl1" xlink:title="label: CustomerOrdersExpectedTimingOfSatisfactionPeriod to plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl2" xml:lang="en-US" id="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl2">Customer order, expected satisfaction period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerOrdersExpectedTimingOfSatisfactionPeriod" xlink:to="plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl2" xlink:title="label: CustomerOrdersExpectedTimingOfSatisfactionPeriod to plab_CustomerOrdersExpectedTimingOfSatisfactionPeriod_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_RevenueRemainingPerformanceObligationsAbstract" xlink:label="RevenueRemainingPerformanceObligationsAbstract" xlink:title="RevenueRemainingPerformanceObligationsAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_RevenueRemainingPerformanceObligationsAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_RevenueRemainingPerformanceObligationsAbstract_lbl1" xml:lang="en-US" id="plab_RevenueRemainingPerformanceObligationsAbstract_lbl1">Revenue, Remaining Performance Obligations [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueRemainingPerformanceObligationsAbstract" xlink:to="plab_RevenueRemainingPerformanceObligationsAbstract_lbl1" xlink:title="label: RevenueRemainingPerformanceObligationsAbstract to plab_RevenueRemainingPerformanceObligationsAbstract_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_RevenueRemainingPerformanceObligationsAbstract_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_RevenueRemainingPerformanceObligationsAbstract_lbl2" xml:lang="en-US" id="plab_RevenueRemainingPerformanceObligationsAbstract_lbl2">Remaining Performance Obligations [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RevenueRemainingPerformanceObligationsAbstract" xlink:to="plab_RevenueRemainingPerformanceObligationsAbstract_lbl2" xlink:title="label: RevenueRemainingPerformanceObligationsAbstract to plab_RevenueRemainingPerformanceObligationsAbstract_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ProductInvoiceTerm" xlink:label="ProductInvoiceTerm" xlink:title="ProductInvoiceTerm" />
    <link:label xlink:type="resource" xlink:label="plab_ProductInvoiceTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ProductInvoiceTerm_lbl" xml:lang="en-US" id="plab_ProductInvoiceTerm_lbl">The term of the product invoiced for payment settlement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductInvoiceTerm" xlink:to="plab_ProductInvoiceTerm_lbl" xlink:title="label: ProductInvoiceTerm to plab_ProductInvoiceTerm_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ProductInvoiceTerm_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ProductInvoiceTerm_lbl1" xml:lang="en-US" id="plab_ProductInvoiceTerm_lbl1">Product Invoice Term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductInvoiceTerm" xlink:to="plab_ProductInvoiceTerm_lbl1" xlink:title="label: ProductInvoiceTerm to plab_ProductInvoiceTerm_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ProductInvoiceTerm_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ProductInvoiceTerm_lbl2" xml:lang="en-US" id="plab_ProductInvoiceTerm_lbl2">Product invoice term</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProductInvoiceTerm" xlink:to="plab_ProductInvoiceTerm_lbl2" xlink:title="label: ProductInvoiceTerm to plab_ProductInvoiceTerm_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AccumulatedOtherComprehensiveIncomeOtherMember" xlink:label="AccumulatedOtherComprehensiveIncomeOtherMember" xlink:title="AccumulatedOtherComprehensiveIncomeOtherMember" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl">Changes to accumulated comprehensive income resulting from other.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl" xlink:title="label: AccumulatedOtherComprehensiveIncomeOtherMember to plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl1" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl1">Accumulated Other Comprehensive Income Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl1" xlink:title="label: AccumulatedOtherComprehensiveIncomeOtherMember to plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl2" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl2">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl2" xlink:title="label: AccumulatedOtherComprehensiveIncomeOtherMember to plab_AccumulatedOtherComprehensiveIncomeOtherMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember" xlink:label="AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember" xlink:title="AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl">Changes to accumulated other comprehensive income attributable to non-controlling interest resulting from other.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl" xlink:title="label: AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember to plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl1" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl1">Accumulated Other Comprehensive Income Attributable to Noncontrolling Interest Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl1" xlink:title="label: AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember to plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl2" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl2">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl2" xlink:title="label: AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember to plab_AccumulatedOtherComprehensiveIncomeAttributableToNoncontrollingInterestOtherMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember" xlink:label="AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember" xlink:title="AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl">Changes to accumulated other comprehensive income including portion attributable to non-controlling interest resulting from other.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl" xlink:title="label: AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember to plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl1" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl1">Accumulated Other Comprehensive Income Including Portion Attributable to Noncontrolling Interest Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl1" xlink:title="label: AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember to plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl2" xml:lang="en-US" id="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl2">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember" xlink:to="plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl2" xlink:title="label: AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember to plab_AccumulatedOtherComprehensiveIncomeIncludingPortionAttributableToNoncontrollingInterestOtherMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ConvertibleSeniorNotesDueOnApril2019Member" xlink:label="ConvertibleSeniorNotesDueOnApril2019Member" xlink:title="ConvertibleSeniorNotesDueOnApril2019Member" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl" xml:lang="en-US" id="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2019Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl" xlink:title="label: ConvertibleSeniorNotesDueOnApril2019Member to plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl1" xml:lang="en-US" id="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl1">Convertible Senior Notes Due On April2019 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2019Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl1" xlink:title="label: ConvertibleSeniorNotesDueOnApril2019Member to plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl2" xml:lang="en-US" id="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl2">3.25% Convertible Senior Notes Matured 2019 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2019Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl2" xlink:title="label: ConvertibleSeniorNotesDueOnApril2019Member to plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_August2019AnnouncedProgramMember" xlink:label="August2019AnnouncedProgramMember" xlink:title="August2019AnnouncedProgramMember" />
    <link:label xlink:type="resource" xlink:label="plab_August2019AnnouncedProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_August2019AnnouncedProgramMember_lbl" xml:lang="en-US" id="plab_August2019AnnouncedProgramMember_lbl">The August 2019 announced program.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="August2019AnnouncedProgramMember" xlink:to="plab_August2019AnnouncedProgramMember_lbl" xlink:title="label: August2019AnnouncedProgramMember to plab_August2019AnnouncedProgramMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_August2019AnnouncedProgramMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_August2019AnnouncedProgramMember_lbl1" xml:lang="en-US" id="plab_August2019AnnouncedProgramMember_lbl1">August 2019 Announced Program [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="August2019AnnouncedProgramMember" xlink:to="plab_August2019AnnouncedProgramMember_lbl1" xlink:title="label: August2019AnnouncedProgramMember to plab_August2019AnnouncedProgramMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_August2019AnnouncedProgramMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_August2019AnnouncedProgramMember_lbl2" xml:lang="en-US" id="plab_August2019AnnouncedProgramMember_lbl2">August 2019 Announced Program [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="August2019AnnouncedProgramMember" xlink:to="plab_August2019AnnouncedProgramMember_lbl2" xlink:title="label: August2019AnnouncedProgramMember to plab_August2019AnnouncedProgramMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_StockRepurchaseProgramCommencementDate" xlink:label="StockRepurchaseProgramCommencementDate" xlink:title="StockRepurchaseProgramCommencementDate" />
    <link:label xlink:type="resource" xlink:label="plab_StockRepurchaseProgramCommencementDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_StockRepurchaseProgramCommencementDate_lbl" xml:lang="en-US" id="plab_StockRepurchaseProgramCommencementDate_lbl">Date when authorized share repurchase program commenced, in CCYY-MM-DD format.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramCommencementDate" xlink:to="plab_StockRepurchaseProgramCommencementDate_lbl" xlink:title="label: StockRepurchaseProgramCommencementDate to plab_StockRepurchaseProgramCommencementDate_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_StockRepurchaseProgramCommencementDate_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_StockRepurchaseProgramCommencementDate_lbl1" xml:lang="en-US" id="plab_StockRepurchaseProgramCommencementDate_lbl1">Stock Repurchase Program Commencement Date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramCommencementDate" xlink:to="plab_StockRepurchaseProgramCommencementDate_lbl1" xlink:title="label: StockRepurchaseProgramCommencementDate to plab_StockRepurchaseProgramCommencementDate_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_StockRepurchaseProgramCommencementDate_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_StockRepurchaseProgramCommencementDate_lbl2" xml:lang="en-US" id="plab_StockRepurchaseProgramCommencementDate_lbl2">Stock repurchase program - commencement date</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramCommencementDate" xlink:to="plab_StockRepurchaseProgramCommencementDate_lbl2" xlink:title="label: StockRepurchaseProgramCommencementDate to plab_StockRepurchaseProgramCommencementDate_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_October2018AnnouncedProgramMember" xlink:label="October2018AnnouncedProgramMember" xlink:title="October2018AnnouncedProgramMember" />
    <link:label xlink:type="resource" xlink:label="plab_October2018AnnouncedProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_October2018AnnouncedProgramMember_lbl" xml:lang="en-US" id="plab_October2018AnnouncedProgramMember_lbl">The October 2018 Announced Program.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="October2018AnnouncedProgramMember" xlink:to="plab_October2018AnnouncedProgramMember_lbl" xlink:title="label: October2018AnnouncedProgramMember to plab_October2018AnnouncedProgramMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_October2018AnnouncedProgramMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_October2018AnnouncedProgramMember_lbl1" xml:lang="en-US" id="plab_October2018AnnouncedProgramMember_lbl1">October 2018 Announced Program [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="October2018AnnouncedProgramMember" xlink:to="plab_October2018AnnouncedProgramMember_lbl1" xlink:title="label: October2018AnnouncedProgramMember to plab_October2018AnnouncedProgramMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_MainstreamFlatPanelDisplaysMember" xlink:label="MainstreamFlatPanelDisplaysMember" xlink:title="MainstreamFlatPanelDisplaysMember" />
    <link:label xlink:type="resource" xlink:label="plab_MainstreamFlatPanelDisplaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_MainstreamFlatPanelDisplaysMember_lbl" xml:lang="en-US" id="plab_MainstreamFlatPanelDisplaysMember_lbl">Represents the classification of products by performance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MainstreamFlatPanelDisplaysMember" xlink:to="plab_MainstreamFlatPanelDisplaysMember_lbl" xlink:title="label: MainstreamFlatPanelDisplaysMember to plab_MainstreamFlatPanelDisplaysMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_MainstreamFlatPanelDisplaysMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_MainstreamFlatPanelDisplaysMember_lbl1" xml:lang="en-US" id="plab_MainstreamFlatPanelDisplaysMember_lbl1">Mainstream Flat Panel Displays [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MainstreamFlatPanelDisplaysMember" xlink:to="plab_MainstreamFlatPanelDisplaysMember_lbl1" xlink:title="label: MainstreamFlatPanelDisplaysMember to plab_MainstreamFlatPanelDisplaysMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_MainstreamFlatPanelDisplaysMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_MainstreamFlatPanelDisplaysMember_lbl2" xml:lang="en-US" id="plab_MainstreamFlatPanelDisplaysMember_lbl2">Mainstream [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MainstreamFlatPanelDisplaysMember" xlink:to="plab_MainstreamFlatPanelDisplaysMember_lbl2" xlink:title="label: MainstreamFlatPanelDisplaysMember to plab_MainstreamFlatPanelDisplaysMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_MainstreamIntegratedCircuitsMember" xlink:label="MainstreamIntegratedCircuitsMember" xlink:title="MainstreamIntegratedCircuitsMember" />
    <link:label xlink:type="resource" xlink:label="plab_MainstreamIntegratedCircuitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_MainstreamIntegratedCircuitsMember_lbl" xml:lang="en-US" id="plab_MainstreamIntegratedCircuitsMember_lbl">Represents the classification of products by performance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MainstreamIntegratedCircuitsMember" xlink:to="plab_MainstreamIntegratedCircuitsMember_lbl" xlink:title="label: MainstreamIntegratedCircuitsMember to plab_MainstreamIntegratedCircuitsMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_MainstreamIntegratedCircuitsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_MainstreamIntegratedCircuitsMember_lbl1" xml:lang="en-US" id="plab_MainstreamIntegratedCircuitsMember_lbl1">Mainstream Integrated Circuits [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MainstreamIntegratedCircuitsMember" xlink:to="plab_MainstreamIntegratedCircuitsMember_lbl1" xlink:title="label: MainstreamIntegratedCircuitsMember to plab_MainstreamIntegratedCircuitsMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_MainstreamIntegratedCircuitsMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_MainstreamIntegratedCircuitsMember_lbl2" xml:lang="en-US" id="plab_MainstreamIntegratedCircuitsMember_lbl2">Mainstream [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MainstreamIntegratedCircuitsMember" xlink:to="plab_MainstreamIntegratedCircuitsMember_lbl2" xlink:title="label: MainstreamIntegratedCircuitsMember to plab_MainstreamIntegratedCircuitsMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_HighEndIntegratedCircuitsMember" xlink:label="HighEndIntegratedCircuitsMember" xlink:title="HighEndIntegratedCircuitsMember" />
    <link:label xlink:type="resource" xlink:label="plab_HighEndIntegratedCircuitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_HighEndIntegratedCircuitsMember_lbl" xml:lang="en-US" id="plab_HighEndIntegratedCircuitsMember_lbl">Represents the classification of products by performance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HighEndIntegratedCircuitsMember" xlink:to="plab_HighEndIntegratedCircuitsMember_lbl" xlink:title="label: HighEndIntegratedCircuitsMember to plab_HighEndIntegratedCircuitsMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_HighEndIntegratedCircuitsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_HighEndIntegratedCircuitsMember_lbl1" xml:lang="en-US" id="plab_HighEndIntegratedCircuitsMember_lbl1">High-end Integrated Circuits [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HighEndIntegratedCircuitsMember" xlink:to="plab_HighEndIntegratedCircuitsMember_lbl1" xlink:title="label: HighEndIntegratedCircuitsMember to plab_HighEndIntegratedCircuitsMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_HighEndIntegratedCircuitsMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_HighEndIntegratedCircuitsMember_lbl2" xml:lang="en-US" id="plab_HighEndIntegratedCircuitsMember_lbl2">High-end [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HighEndIntegratedCircuitsMember" xlink:to="plab_HighEndIntegratedCircuitsMember_lbl2" xlink:title="label: HighEndIntegratedCircuitsMember to plab_HighEndIntegratedCircuitsMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_IntegratedCircuitsMember" xlink:label="IntegratedCircuitsMember" xlink:title="IntegratedCircuitsMember" />
    <link:label xlink:type="resource" xlink:label="plab_IntegratedCircuitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_IntegratedCircuitsMember_lbl" xml:lang="en-US" id="plab_IntegratedCircuitsMember_lbl">Represents one of the products of the entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntegratedCircuitsMember" xlink:to="plab_IntegratedCircuitsMember_lbl" xlink:title="label: IntegratedCircuitsMember to plab_IntegratedCircuitsMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_IntegratedCircuitsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_IntegratedCircuitsMember_lbl1" xml:lang="en-US" id="plab_IntegratedCircuitsMember_lbl1">Integrated Circuits [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntegratedCircuitsMember" xlink:to="plab_IntegratedCircuitsMember_lbl1" xlink:title="label: IntegratedCircuitsMember to plab_IntegratedCircuitsMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_IntegratedCircuitsMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_IntegratedCircuitsMember_lbl2" xml:lang="en-US" id="plab_IntegratedCircuitsMember_lbl2">IC [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntegratedCircuitsMember" xlink:to="plab_IntegratedCircuitsMember_lbl2" xlink:title="label: IntegratedCircuitsMember to plab_IntegratedCircuitsMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_HighEndFlatPanelDisplaysMember" xlink:label="HighEndFlatPanelDisplaysMember" xlink:title="HighEndFlatPanelDisplaysMember" />
    <link:label xlink:type="resource" xlink:label="plab_HighEndFlatPanelDisplaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_HighEndFlatPanelDisplaysMember_lbl" xml:lang="en-US" id="plab_HighEndFlatPanelDisplaysMember_lbl">Represents the classification of products by performance.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HighEndFlatPanelDisplaysMember" xlink:to="plab_HighEndFlatPanelDisplaysMember_lbl" xlink:title="label: HighEndFlatPanelDisplaysMember to plab_HighEndFlatPanelDisplaysMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_HighEndFlatPanelDisplaysMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_HighEndFlatPanelDisplaysMember_lbl1" xml:lang="en-US" id="plab_HighEndFlatPanelDisplaysMember_lbl1">High-end Flat Panel Displays [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HighEndFlatPanelDisplaysMember" xlink:to="plab_HighEndFlatPanelDisplaysMember_lbl1" xlink:title="label: HighEndFlatPanelDisplaysMember to plab_HighEndFlatPanelDisplaysMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_HighEndFlatPanelDisplaysMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_HighEndFlatPanelDisplaysMember_lbl2" xml:lang="en-US" id="plab_HighEndFlatPanelDisplaysMember_lbl2">High-end [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="HighEndFlatPanelDisplaysMember" xlink:to="plab_HighEndFlatPanelDisplaysMember_lbl2" xlink:title="label: HighEndFlatPanelDisplaysMember to plab_HighEndFlatPanelDisplaysMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_FlatPanelDisplaysMember" xlink:label="FlatPanelDisplaysMember" xlink:title="FlatPanelDisplaysMember" />
    <link:label xlink:type="resource" xlink:label="plab_FlatPanelDisplaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_FlatPanelDisplaysMember_lbl" xml:lang="en-US" id="plab_FlatPanelDisplaysMember_lbl">Represents one of the products of the entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FlatPanelDisplaysMember" xlink:to="plab_FlatPanelDisplaysMember_lbl" xlink:title="label: FlatPanelDisplaysMember to plab_FlatPanelDisplaysMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_FlatPanelDisplaysMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_FlatPanelDisplaysMember_lbl1" xml:lang="en-US" id="plab_FlatPanelDisplaysMember_lbl1">Flat Panel Displays [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FlatPanelDisplaysMember" xlink:to="plab_FlatPanelDisplaysMember_lbl1" xlink:title="label: FlatPanelDisplaysMember to plab_FlatPanelDisplaysMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_FlatPanelDisplaysMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_FlatPanelDisplaysMember_lbl2" xml:lang="en-US" id="plab_FlatPanelDisplaysMember_lbl2">FPD [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FlatPanelDisplaysMember" xlink:to="plab_FlatPanelDisplaysMember_lbl2" xlink:title="label: FlatPanelDisplaysMember to plab_FlatPanelDisplaysMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AllOtherAsiaMember" xlink:label="AllOtherAsiaMember" xlink:title="AllOtherAsiaMember" />
    <link:label xlink:type="resource" xlink:label="plab_AllOtherAsiaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AllOtherAsiaMember_lbl" xml:lang="en-US" id="plab_AllOtherAsiaMember_lbl">Represents one of the geographical areas where entity's activities take place.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllOtherAsiaMember" xlink:to="plab_AllOtherAsiaMember_lbl" xlink:title="label: AllOtherAsiaMember to plab_AllOtherAsiaMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AllOtherAsiaMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AllOtherAsiaMember_lbl1" xml:lang="en-US" id="plab_AllOtherAsiaMember_lbl1">All Other Asia [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllOtherAsiaMember" xlink:to="plab_AllOtherAsiaMember_lbl1" xlink:title="label: AllOtherAsiaMember to plab_AllOtherAsiaMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AllOtherAsiaMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="plab_AllOtherAsiaMember_lbl2" xml:lang="en-US" id="plab_AllOtherAsiaMember_lbl2">Other [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AllOtherAsiaMember" xlink:to="plab_AllOtherAsiaMember_lbl2" xlink:title="label: AllOtherAsiaMember to plab_AllOtherAsiaMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance" xlink:label="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance" xlink:title="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl">Amount of reasonable estimate for valuation allowance from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance" xlink:to="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl" xlink:title="label: TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance to plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl1" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl1">Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Valuation Allowance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance" xlink:to="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl1" xlink:title="label: TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance to plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl2" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl2">Estimated deemed repatriation transition tax, valuation allowance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance" xlink:to="plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl2" xlink:title="label: TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance to plab_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsValuationAllowance_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AlternateMinimumTaxCreditCarryforwardMember" xlink:label="AlternateMinimumTaxCreditCarryforwardMember" xlink:title="AlternateMinimumTaxCreditCarryforwardMember" />
    <link:label xlink:type="resource" xlink:label="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl" xml:lang="en-US" id="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl">Tax credit carryforwards relating to alternate minimum tax.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlternateMinimumTaxCreditCarryforwardMember" xlink:to="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl" xlink:title="label: AlternateMinimumTaxCreditCarryforwardMember to plab_AlternateMinimumTaxCreditCarryforwardMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl1" xml:lang="en-US" id="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl1">Alternate Minimum Tax Credit Carryforward [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlternateMinimumTaxCreditCarryforwardMember" xlink:to="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl1" xlink:title="label: AlternateMinimumTaxCreditCarryforwardMember to plab_AlternateMinimumTaxCreditCarryforwardMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl2" xml:lang="en-US" id="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl2">Federal Alternate Minimum [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AlternateMinimumTaxCreditCarryforwardMember" xlink:to="plab_AlternateMinimumTaxCreditCarryforwardMember_lbl2" xlink:title="label: AlternateMinimumTaxCreditCarryforwardMember to plab_AlternateMinimumTaxCreditCarryforwardMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_CreditCarryforwardsRefundPeriod" xlink:label="CreditCarryforwardsRefundPeriod" xlink:title="CreditCarryforwardsRefundPeriod" />
    <link:label xlink:type="resource" xlink:label="plab_CreditCarryforwardsRefundPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_CreditCarryforwardsRefundPeriod_lbl" xml:lang="en-US" id="plab_CreditCarryforwardsRefundPeriod_lbl">Refers to credit carryforwards refund period.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditCarryforwardsRefundPeriod" xlink:to="plab_CreditCarryforwardsRefundPeriod_lbl" xlink:title="label: CreditCarryforwardsRefundPeriod to plab_CreditCarryforwardsRefundPeriod_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_CreditCarryforwardsRefundPeriod_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_CreditCarryforwardsRefundPeriod_lbl1" xml:lang="en-US" id="plab_CreditCarryforwardsRefundPeriod_lbl1">Credit Carryforwards Refund Period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditCarryforwardsRefundPeriod" xlink:to="plab_CreditCarryforwardsRefundPeriod_lbl1" xlink:title="label: CreditCarryforwardsRefundPeriod to plab_CreditCarryforwardsRefundPeriod_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_CreditCarryforwardsRefundPeriod_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_CreditCarryforwardsRefundPeriod_lbl2" xml:lang="en-US" id="plab_CreditCarryforwardsRefundPeriod_lbl2">Credit carryforwards refund period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CreditCarryforwardsRefundPeriod" xlink:to="plab_CreditCarryforwardsRefundPeriod_lbl2" xlink:title="label: CreditCarryforwardsRefundPeriod to plab_CreditCarryforwardsRefundPeriod_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_TaxCreditCarryforwardAbstract" xlink:label="TaxCreditCarryforwardAbstract" xlink:title="TaxCreditCarryforwardAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCreditCarryforwardAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_TaxCreditCarryforwardAbstract_lbl1" xml:lang="en-US" id="plab_TaxCreditCarryforwardAbstract_lbl1">Tax Credit Carryforward [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCreditCarryforwardAbstract" xlink:to="plab_TaxCreditCarryforwardAbstract_lbl1" xlink:title="label: TaxCreditCarryforwardAbstract to plab_TaxCreditCarryforwardAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:label="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:title="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" />
    <link:label xlink:type="resource" xlink:label="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl" xml:lang="en-US" id="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl">Percentage of foreign federal statutory tax rate applicable to pretax income (loss).</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:to="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl" xlink:title="label: EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent to plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl1" xml:lang="en-US" id="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl1">Effective Income Tax Rate Reconciliation, at Foreign Statutory Income Tax Rate, Percent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:to="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl1" xlink:title="label: EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent to plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl2" xml:lang="en-US" id="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl2">Foreign statutory rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:to="plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl2" xlink:title="label: EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent to plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ForeignTaxAbstract" xlink:label="ForeignTaxAbstract" xlink:title="ForeignTaxAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_ForeignTaxAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ForeignTaxAbstract_lbl1" xml:lang="en-US" id="plab_ForeignTaxAbstract_lbl1">Foreign Tax [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ForeignTaxAbstract" xlink:to="plab_ForeignTaxAbstract_lbl1" xlink:title="label: ForeignTaxAbstract to plab_ForeignTaxAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance" xlink:label="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance" xlink:title="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl">Amount of reasonable estimate for valuation allowance for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance" xlink:to="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl" xlink:title="label: TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance to plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl1" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl1">Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in tax rate, deferred tax asset, valuation allowance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance" xlink:to="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl1" xlink:title="label: TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance to plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl2" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowance_lbl2">Change in tax rate, deferred tax asset, valuation allowance</link:label>
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    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsNotInCashPercent" xlink:label="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsNotInCashPercent" xlink:title="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsNotInCashPercent" />
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    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_TaiwanAgencyOfTheMinistryOfFinanceMember" xlink:label="TaiwanAgencyOfTheMinistryOfFinanceMember" xlink:title="TaiwanAgencyOfTheMinistryOfFinanceMember" />
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    <link:label xlink:type="resource" xlink:label="plab_MasterLeaseAgreementMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_MasterLeaseAgreementMember_lbl1" xml:lang="en-US" id="plab_MasterLeaseAgreementMember_lbl1">Master Lease Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MasterLeaseAgreementMember" xlink:to="plab_MasterLeaseAgreementMember_lbl1" xlink:title="label: MasterLeaseAgreementMember to plab_MasterLeaseAgreementMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven" xlink:label="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven" xlink:title="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven" />
    <link:label xlink:type="resource" xlink:label="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl" xml:lang="en-US" id="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl">Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the seventh fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven" xlink:to="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl" xlink:title="label: LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven to plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl1" xml:lang="en-US" id="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl1">Long-term Debt, Maturities, Repayments of Principal in Year Seven</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven" xlink:to="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl1" xlink:title="label: LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven to plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl2" xml:lang="en-US" id="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl2">2026</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven" xlink:to="plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl2" xlink:title="label: LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven to plab_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearSeven_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_DebtInstrumentTermOfVariableRate" xlink:label="DebtInstrumentTermOfVariableRate" xlink:title="DebtInstrumentTermOfVariableRate" />
    <link:label xlink:type="resource" xlink:label="plab_DebtInstrumentTermOfVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_DebtInstrumentTermOfVariableRate_lbl" xml:lang="en-US" id="plab_DebtInstrumentTermOfVariableRate_lbl">Term of the interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTermOfVariableRate" xlink:to="plab_DebtInstrumentTermOfVariableRate_lbl" xlink:title="label: DebtInstrumentTermOfVariableRate to plab_DebtInstrumentTermOfVariableRate_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_DebtInstrumentTermOfVariableRate_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_DebtInstrumentTermOfVariableRate_lbl1" xml:lang="en-US" id="plab_DebtInstrumentTermOfVariableRate_lbl1">Debt Instrument Term Of Variable Rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTermOfVariableRate" xlink:to="plab_DebtInstrumentTermOfVariableRate_lbl1" xlink:title="label: DebtInstrumentTermOfVariableRate to plab_DebtInstrumentTermOfVariableRate_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_DebtInstrumentTermOfVariableRate_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_DebtInstrumentTermOfVariableRate_lbl2" xml:lang="en-US" id="plab_DebtInstrumentTermOfVariableRate_lbl2">Term of variable rate</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DebtInstrumentTermOfVariableRate" xlink:to="plab_DebtInstrumentTermOfVariableRate_lbl2" xlink:title="label: DebtInstrumentTermOfVariableRate to plab_DebtInstrumentTermOfVariableRate_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_FaceAmountOfEachNoteConvertedOrConvertible" xlink:label="FaceAmountOfEachNoteConvertedOrConvertible" xlink:title="FaceAmountOfEachNoteConvertedOrConvertible" />
    <link:label xlink:type="resource" xlink:label="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl" xml:lang="en-US" id="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl">This line item represents the face amount of each note converted or convertible to common stock.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FaceAmountOfEachNoteConvertedOrConvertible" xlink:to="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl" xlink:title="label: FaceAmountOfEachNoteConvertedOrConvertible to plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl1" xml:lang="en-US" id="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl1">Face Amount Of Each Note Converted Or Convertible</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FaceAmountOfEachNoteConvertedOrConvertible" xlink:to="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl1" xlink:title="label: FaceAmountOfEachNoteConvertedOrConvertible to plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl2" xml:lang="en-US" id="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl2">Face amount of each note converted</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="FaceAmountOfEachNoteConvertedOrConvertible" xlink:to="plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl2" xlink:title="label: FaceAmountOfEachNoteConvertedOrConvertible to plab_FaceAmountOfEachNoteConvertedOrConvertible_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AmendedAndRestatedCreditAgreementMember" xlink:label="AmendedAndRestatedCreditAgreementMember" xlink:title="AmendedAndRestatedCreditAgreementMember" />
    <link:label xlink:type="resource" xlink:label="plab_AmendedAndRestatedCreditAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AmendedAndRestatedCreditAgreementMember_lbl" xml:lang="en-US" id="plab_AmendedAndRestatedCreditAgreementMember_lbl">The member represents to amended and restated credit agreement.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendedAndRestatedCreditAgreementMember" xlink:to="plab_AmendedAndRestatedCreditAgreementMember_lbl" xlink:title="label: AmendedAndRestatedCreditAgreementMember to plab_AmendedAndRestatedCreditAgreementMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AmendedAndRestatedCreditAgreementMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AmendedAndRestatedCreditAgreementMember_lbl1" xml:lang="en-US" id="plab_AmendedAndRestatedCreditAgreementMember_lbl1">Amended and Restated Credit Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendedAndRestatedCreditAgreementMember" xlink:to="plab_AmendedAndRestatedCreditAgreementMember_lbl1" xlink:title="label: AmendedAndRestatedCreditAgreementMember to plab_AmendedAndRestatedCreditAgreementMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AmendedAndRestatedCreditAgreementMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_AmendedAndRestatedCreditAgreementMember_lbl2" xml:lang="en-US" id="plab_AmendedAndRestatedCreditAgreementMember_lbl2">Amended and Restated Credit Agreement [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmendedAndRestatedCreditAgreementMember" xlink:to="plab_AmendedAndRestatedCreditAgreementMember_lbl2" xlink:title="label: AmendedAndRestatedCreditAgreementMember to plab_AmendedAndRestatedCreditAgreementMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_WorkingCapitalLoanVATMember" xlink:label="WorkingCapitalLoanVATMember" xlink:title="WorkingCapitalLoanVATMember" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanVATMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_WorkingCapitalLoanVATMember_lbl" xml:lang="en-US" id="plab_WorkingCapitalLoanVATMember_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder to pay value added taxes.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanVATMember" xlink:to="plab_WorkingCapitalLoanVATMember_lbl" xlink:title="label: WorkingCapitalLoanVATMember to plab_WorkingCapitalLoanVATMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanVATMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_WorkingCapitalLoanVATMember_lbl1" xml:lang="en-US" id="plab_WorkingCapitalLoanVATMember_lbl1">Working Capital Loan, VAT [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanVATMember" xlink:to="plab_WorkingCapitalLoanVATMember_lbl1" xlink:title="label: WorkingCapitalLoanVATMember to plab_WorkingCapitalLoanVATMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanVATMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_WorkingCapitalLoanVATMember_lbl2" xml:lang="en-US" id="plab_WorkingCapitalLoanVATMember_lbl2">Working Capital Loans, VAT [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanVATMember" xlink:to="plab_WorkingCapitalLoanVATMember_lbl2" xlink:title="label: WorkingCapitalLoanVATMember to plab_WorkingCapitalLoanVATMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_WorkingCapitalLoanFundOperationsMember" xlink:label="WorkingCapitalLoanFundOperationsMember" xlink:title="WorkingCapitalLoanFundOperationsMember" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanFundOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_WorkingCapitalLoanFundOperationsMember_lbl" xml:lang="en-US" id="plab_WorkingCapitalLoanFundOperationsMember_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder to pay fund operations.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanFundOperationsMember" xlink:to="plab_WorkingCapitalLoanFundOperationsMember_lbl" xlink:title="label: WorkingCapitalLoanFundOperationsMember to plab_WorkingCapitalLoanFundOperationsMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanFundOperationsMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_WorkingCapitalLoanFundOperationsMember_lbl1" xml:lang="en-US" id="plab_WorkingCapitalLoanFundOperationsMember_lbl1">Working Capital Loan, Fund Operations [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanFundOperationsMember" xlink:to="plab_WorkingCapitalLoanFundOperationsMember_lbl1" xlink:title="label: WorkingCapitalLoanFundOperationsMember to plab_WorkingCapitalLoanFundOperationsMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanFundOperationsMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_WorkingCapitalLoanFundOperationsMember_lbl2" xml:lang="en-US" id="plab_WorkingCapitalLoanFundOperationsMember_lbl2">Working Capital Loans, Fund Operations [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanFundOperationsMember" xlink:to="plab_WorkingCapitalLoanFundOperationsMember_lbl2" xlink:title="label: WorkingCapitalLoanFundOperationsMember to plab_WorkingCapitalLoanFundOperationsMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ConvertibleSeniorNotesDueOnApril2016Member" xlink:label="ConvertibleSeniorNotesDueOnApril2016Member" xlink:title="ConvertibleSeniorNotesDueOnApril2016Member" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl" xml:lang="en-US" id="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2016Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl" xlink:title="label: ConvertibleSeniorNotesDueOnApril2016Member to plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl1" xml:lang="en-US" id="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl1">Convertible senior notes due on April 2016 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2016Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl1" xlink:title="label: ConvertibleSeniorNotesDueOnApril2016Member to plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl2" xml:lang="en-US" id="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl2">3.25% Convertible Senior Notes due in April 2016 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2016Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl2" xlink:title="label: ConvertibleSeniorNotesDueOnApril2016Member to plab_ConvertibleSeniorNotesDueOnApril2016Member_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ConvertibleSeniorNotesMaturedApril2019Member" xlink:label="ConvertibleSeniorNotesMaturedApril2019Member" xlink:title="ConvertibleSeniorNotesMaturedApril2019Member" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl" xml:lang="en-US" id="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesMaturedApril2019Member" xlink:to="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl" xlink:title="label: ConvertibleSeniorNotesMaturedApril2019Member to plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl1" xml:lang="en-US" id="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl1">Convertible Senior Notes Matured April2019 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesMaturedApril2019Member" xlink:to="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl1" xlink:title="label: ConvertibleSeniorNotesMaturedApril2019Member to plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl2" xml:lang="en-US" id="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl2">3.25% Convertible Senior Notes Matured April 2019 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesMaturedApril2019Member" xlink:to="plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl2" xlink:title="label: ConvertibleSeniorNotesMaturedApril2019Member to plab_ConvertibleSeniorNotesMaturedApril2019Member_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AntidilutiveSecuritiesAbstract" xlink:label="AntidilutiveSecuritiesAbstract" xlink:title="AntidilutiveSecuritiesAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_AntidilutiveSecuritiesAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AntidilutiveSecuritiesAbstract_lbl1" xml:lang="en-US" id="plab_AntidilutiveSecuritiesAbstract_lbl1">Antidilutive Securities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesAbstract" xlink:to="plab_AntidilutiveSecuritiesAbstract_lbl1" xlink:title="label: AntidilutiveSecuritiesAbstract to plab_AntidilutiveSecuritiesAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl1" xml:lang="en-US" id="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl1">Share based Compensation Arrangement by Share based Payment Award, Options, Aggregate Intrinsic Value [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" xlink:to="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl1" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract to plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl2" xml:lang="en-US" id="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl2">Aggregate Intrinsic Value [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract" xlink:to="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract to plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAggregateIntrinsicValueAbstract_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl1" xml:lang="en-US" id="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl1">Share based Compensation Arrangement by Share based Payment Award Options Weighted Average Remaining Contractual Term [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" xlink:to="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl1" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract to plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl2" xml:lang="en-US" id="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl2">Weighted-Average Remaining Contractual Life [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract" xlink:to="plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl2" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract to plab_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageRemainingContractualTermAbstract_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_StockOptionsActivityAbstract" xlink:label="StockOptionsActivityAbstract" xlink:title="StockOptionsActivityAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_StockOptionsActivityAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_StockOptionsActivityAbstract_lbl1" xml:lang="en-US" id="plab_StockOptionsActivityAbstract_lbl1">Stock options activity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockOptionsActivityAbstract" xlink:to="plab_StockOptionsActivityAbstract_lbl1" xlink:title="label: StockOptionsActivityAbstract to plab_StockOptionsActivityAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_NumberOfManufacturingFacilities" xlink:label="NumberOfManufacturingFacilities" xlink:title="NumberOfManufacturingFacilities" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfManufacturingFacilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_NumberOfManufacturingFacilities_lbl" xml:lang="en-US" id="plab_NumberOfManufacturingFacilities_lbl">This line item represents the number of manufacturing facilities of the entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfManufacturingFacilities" xlink:to="plab_NumberOfManufacturingFacilities_lbl" xlink:title="label: NumberOfManufacturingFacilities to plab_NumberOfManufacturingFacilities_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfManufacturingFacilities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_NumberOfManufacturingFacilities_lbl1" xml:lang="en-US" id="plab_NumberOfManufacturingFacilities_lbl1">Number of manufacturing facilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfManufacturingFacilities" xlink:to="plab_NumberOfManufacturingFacilities_lbl1" xlink:title="label: NumberOfManufacturingFacilities to plab_NumberOfManufacturingFacilities_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfManufacturingFacilities_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_NumberOfManufacturingFacilities_lbl2" xml:lang="en-US" id="plab_NumberOfManufacturingFacilities_lbl2">Number of manufacturing facilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfManufacturingFacilities" xlink:to="plab_NumberOfManufacturingFacilities_lbl2" xlink:title="label: NumberOfManufacturingFacilities to plab_NumberOfManufacturingFacilities_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ManufacturingFacilitiesAbstract" xlink:label="ManufacturingFacilitiesAbstract" xlink:title="ManufacturingFacilitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ManufacturingFacilitiesAbstract_lbl1" xml:lang="en-US" id="plab_ManufacturingFacilitiesAbstract_lbl1">Manufacturing Facilities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesAbstract" xlink:to="plab_ManufacturingFacilitiesAbstract_lbl1" xlink:title="label: ManufacturingFacilitiesAbstract to plab_ManufacturingFacilitiesAbstract_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesAbstract_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ManufacturingFacilitiesAbstract_lbl2" xml:lang="en-US" id="plab_ManufacturingFacilitiesAbstract_lbl2">Manufacturing Facilities [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesAbstract" xlink:to="plab_ManufacturingFacilitiesAbstract_lbl2" xlink:title="label: ManufacturingFacilitiesAbstract to plab_ManufacturingFacilitiesAbstract_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ManufacturingFacilitiesByGeographicalRegionLineItems" xlink:label="ManufacturingFacilitiesByGeographicalRegionLineItems" xlink:title="ManufacturingFacilitiesByGeographicalRegionLineItems" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl" xml:lang="en-US" id="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl">Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesByGeographicalRegionLineItems" xlink:to="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl" xlink:title="label: ManufacturingFacilitiesByGeographicalRegionLineItems to plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl1" xml:lang="en-US" id="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl1">Manufacturing Facilities By Geographical Region [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesByGeographicalRegionLineItems" xlink:to="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl1" xlink:title="label: ManufacturingFacilitiesByGeographicalRegionLineItems to plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl2" xml:lang="en-US" id="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl2">Manufacturing Facilities By Geographical Region [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesByGeographicalRegionLineItems" xlink:to="plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl2" xlink:title="label: ManufacturingFacilitiesByGeographicalRegionLineItems to plab_ManufacturingFacilitiesByGeographicalRegionLineItems_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ManufacturingFacilitiesByGeographicalRegionTable" xlink:label="ManufacturingFacilitiesByGeographicalRegionTable" xlink:title="ManufacturingFacilitiesByGeographicalRegionTable" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl" xml:lang="en-US" id="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl">Describes the operating facilities of the reporting entity by geographical region.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesByGeographicalRegionTable" xlink:to="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl" xlink:title="label: ManufacturingFacilitiesByGeographicalRegionTable to plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl1" xml:lang="en-US" id="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl1">Manufacturing Facilities by Geographical Region [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ManufacturingFacilitiesByGeographicalRegionTable" xlink:to="plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl1" xlink:title="label: ManufacturingFacilitiesByGeographicalRegionTable to plab_ManufacturingFacilitiesByGeographicalRegionTable_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_ProjectLoanMember" xlink:label="ProjectLoanMember" xlink:title="ProjectLoanMember" />
    <link:label xlink:type="resource" xlink:label="plab_ProjectLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_ProjectLoanMember_lbl" xml:lang="en-US" id="plab_ProjectLoanMember_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProjectLoanMember" xlink:to="plab_ProjectLoanMember_lbl" xlink:title="label: ProjectLoanMember to plab_ProjectLoanMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_ProjectLoanMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_ProjectLoanMember_lbl1" xml:lang="en-US" id="plab_ProjectLoanMember_lbl1">Project Loan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProjectLoanMember" xlink:to="plab_ProjectLoanMember_lbl1" xlink:title="label: ProjectLoanMember to plab_ProjectLoanMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_ProjectLoanMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_ProjectLoanMember_lbl2" xml:lang="en-US" id="plab_ProjectLoanMember_lbl2">Project Loans [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProjectLoanMember" xlink:to="plab_ProjectLoanMember_lbl2" xlink:title="label: ProjectLoanMember to plab_ProjectLoanMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_WorkingCapitalLoanMember" xlink:label="WorkingCapitalLoanMember" xlink:title="WorkingCapitalLoanMember" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_WorkingCapitalLoanMember_lbl" xml:lang="en-US" id="plab_WorkingCapitalLoanMember_lbl">Written promise to pay a note which can be exchanged for a specified quantity of securities (typically common stock), at the option of the issuer or the holder.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanMember" xlink:to="plab_WorkingCapitalLoanMember_lbl" xlink:title="label: WorkingCapitalLoanMember to plab_WorkingCapitalLoanMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_WorkingCapitalLoanMember_lbl1" xml:lang="en-US" id="plab_WorkingCapitalLoanMember_lbl1">Working Capital Loan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanMember" xlink:to="plab_WorkingCapitalLoanMember_lbl1" xlink:title="label: WorkingCapitalLoanMember to plab_WorkingCapitalLoanMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_WorkingCapitalLoanMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_WorkingCapitalLoanMember_lbl2" xml:lang="en-US" id="plab_WorkingCapitalLoanMember_lbl2">Working Capital Loans [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="WorkingCapitalLoanMember" xlink:to="plab_WorkingCapitalLoanMember_lbl2" xlink:title="label: WorkingCapitalLoanMember to plab_WorkingCapitalLoanMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax" xlink:label="OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax" xlink:title="OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax" />
    <link:label xlink:type="resource" xlink:label="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl" xml:lang="en-US" id="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl">Net of tax amount of the appreciation (loss) for other adjustments.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax" xlink:to="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl" xlink:title="label: OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax to plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl1" xml:lang="en-US" id="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl1">Other Comprehensive Income (Loss), Other Adjustments, Net of Tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax" xlink:to="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl1" xlink:title="label: OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax to plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl2" xml:lang="en-US" id="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl2">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax" xlink:to="plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl2" xlink:title="label: OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax to plab_OtherComprehensiveIncomeLossOtherAdjustmentsNetOfTax_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_PDMCXMember" xlink:label="PDMCXMember" xlink:title="PDMCXMember" />
    <link:label xlink:type="resource" xlink:label="plab_PDMCXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_PDMCXMember_lbl" xml:lang="en-US" id="plab_PDMCXMember_lbl">The joint venture.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PDMCXMember" xlink:to="plab_PDMCXMember_lbl" xlink:title="label: PDMCXMember to plab_PDMCXMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_PDMCXMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_PDMCXMember_lbl1" xml:lang="en-US" id="plab_PDMCXMember_lbl1">PDMCX [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PDMCXMember" xlink:to="plab_PDMCXMember_lbl1" xlink:title="label: PDMCXMember to plab_PDMCXMember_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_PDMCXMember_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_PDMCXMember_lbl2" xml:lang="en-US" id="plab_PDMCXMember_lbl2">Carrying Amount [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PDMCXMember" xlink:to="plab_PDMCXMember_lbl2" xlink:title="label: PDMCXMember to plab_PDMCXMember_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:title="AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures" />
    <link:label xlink:type="resource" xlink:label="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xml:lang="en-US" id="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl">Amount invested and amount of additional committed investment of variable interest holders in consolidated variable interest entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:to="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" xlink:title="label: AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures to plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl1" xml:lang="en-US" id="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl1">Amount Invested And Committed To Be Invested In Affiliates Subsidiaries Associates And Joint Ventures</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:to="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl1" xlink:title="label: AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures to plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl2" xml:lang="en-US" id="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl2">Total committed investment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:to="plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl2" xlink:title="label: AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures to plab_AmountInvestedAndCommittedToBeInvestedInAffiliatesSubsidiariesAssociatesAndJointVentures_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20190728.xsd#plab_NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised" xlink:label="NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised" xlink:title="NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised_lbl" xml:lang="en-US" id="plab_NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised_lbl">Number of consecutive months an investor's ownership can be below 20% before an option to put or purchase the investor's ownership interest may be exercised.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised" xlink:to="plab_NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised_lbl" xlink:title="label: NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised to plab_NumberOfConsecutiveMonthsOwnershipInterestMayFallBelowTwentyPercentForPutOrPurchaseOptionsToBeExercised_lbl" />
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