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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="AccumulatedTranslationAdjustmentMember" xlink:title="AccumulatedTranslationAdjustmentMember" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:label="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" xlink:title="AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AntidilutiveSecuritiesNameDomain" xlink:to="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:title="label: AntidilutiveSecuritiesNameDomain to us-gaap_AntidilutiveSecuritiesNameDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <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/2018/elts/us-gaap-2018-01-31.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>
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    <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/2018/elts/us-gaap-2018-01-31.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/totalLabel" xlink:title="us-gaap_AssetsCurrent_lbl" xml:lang="en-US" id="us-gaap_AssetsCurrent_lbl">Total current assets</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_AssetsCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_AssetsCurrent_lbl1" xml:lang="en-US" id="us-gaap_AssetsCurrent_lbl1">Assets, Current</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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="AssetsCurrentAbstract" xlink:title="AssetsCurrentAbstract" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNetLesseeBalanceSheetAbstract" xlink:label="CapitalLeasesBalanceSheetAssetsByMajorClassNetLesseeBalanceSheetAbstract" xlink:title="CapitalLeasesBalanceSheetAssetsByMajorClassNetLesseeBalanceSheetAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNetLesseeBalanceSheetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNetLesseeBalanceSheetAbstract_lbl" xml:lang="en-US" id="us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNetLesseeBalanceSheetAbstract_lbl">Equipment under capital leases included in property, plant and equipment [Abstract]</link:label>
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    <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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="CostOfGoodsAndServicesSold" xlink:title="CostOfGoodsAndServicesSold" />
    <link:label xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSold_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_CostOfGoodsAndServicesSold_lbl" xml:lang="en-US" id="us-gaap_CostOfGoodsAndServicesSold_lbl">Cost of goods sold</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSold_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CostOfGoodsAndServicesSold_lbl1" xml:lang="en-US" id="us-gaap_CostOfGoodsAndServicesSold_lbl1">Cost of Goods and Services Sold</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl" xml:lang="en-US" id="us-gaap_CostOfGoodsAndServicesSoldDepreciationAndAmortization_lbl">Depreciation and amortization expense</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:title="EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="EmployeeStockOptionMember" xlink:title="EmployeeStockOptionMember" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_EmployeeStockOptionMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EmployeeStockOptionMember_lbl1" xml:lang="en-US" id="us-gaap_EmployeeStockOptionMember_lbl1">Employee Stock Option [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl" xml:lang="en-US" id="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions_lbl">Unrecognized compensation cost related to unvested option awards</link:label>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_lbl" xlink:title="label: EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions to us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions_lbl" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xml:lang="en-US" id="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl">Compensation cost not yet recognized related to unvested restricted stock awards</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:label="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" xlink:title="EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvesteeMember" xlink:label="EquityMethodInvesteeMember" xlink:title="EquityMethodInvesteeMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_EquityMethodInvesteeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_EquityMethodInvesteeMember_lbl" xml:lang="en-US" id="us-gaap_EquityMethodInvesteeMember_lbl">Photronics Interest [Member]</link:label>
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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:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:label="InventoryFinishedGoods" xlink:title="InventoryFinishedGoods" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryFinishedGoods_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_InventoryFinishedGoods_lbl" xml:lang="en-US" id="us-gaap_InventoryFinishedGoods_lbl">Finished goods</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryFinishedGoods" xlink:to="us-gaap_InventoryFinishedGoods_lbl" xlink:title="label: InventoryFinishedGoods to us-gaap_InventoryFinishedGoods_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureTextBlock" xlink:label="InventoryDisclosureTextBlock" xlink:title="InventoryDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_InventoryDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_InventoryDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_InventoryDisclosureTextBlock_lbl">INVENTORIES</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_lbl" xlink:title="label: InventoryDisclosureTextBlock to us-gaap_InventoryDisclosureTextBlock_lbl" />
    <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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryDisclosureAbstract" xlink:label="InventoryDisclosureAbstract" xlink:title="InventoryDisclosureAbstract" />
    <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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InventoryDisclosureAbstract" xlink:to="us-gaap_InventoryDisclosureAbstract_lbl" xlink:title="label: InventoryDisclosureAbstract to us-gaap_InventoryDisclosureAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/totalLabel" xlink:title="us-gaap_InventoryNet_lbl" xml:lang="en-US" id="us-gaap_InventoryNet_lbl">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_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/verboseLabel" xlink:title="us-gaap_InventoryNet_lbl1" xml:lang="en-US" id="us-gaap_InventoryNet_lbl1">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_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, Net</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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/totalLabel" xlink:title="us-gaap_LiabilitiesCurrent_lbl" xml:lang="en-US" id="us-gaap_LiabilitiesCurrent_lbl">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_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/label" xlink:title="us-gaap_LiabilitiesCurrent_lbl1" xml:lang="en-US" id="us-gaap_LiabilitiesCurrent_lbl1">Liabilities, Current</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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl" xlink:title="label: LineOfCredit to us-gaap_LineOfCredit_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:title="LineOfCreditFacilityMaximumBorrowingCapacity" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xml:lang="en-US" id="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl">Maximum borrowing capacity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:title="label: LineOfCreditFacilityMaximumBorrowingCapacity to us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <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>
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    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities_lbl">Long-term debt and capital lease obligations</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract" xlink:label="LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract" xlink:title="LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract_lbl">Long-term borrowings [Abstract]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturitiesAbstract_lbl1">Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="LongTermDebtAndCapitalLeaseObligations" xlink:title="LongTermDebtAndCapitalLeaseObligations" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl">Long-term debt</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" xlink:title="label: LongTermDebtAndCapitalLeaseObligations to us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1">Long-term debt and capital lease obligations non current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" xlink:title="label: LongTermDebtAndCapitalLeaseObligations to us-gaap_LongTermDebtAndCapitalLeaseObligations_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:title="LongTermDebtAndCapitalLeaseObligationsCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_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="LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" xlink:title="label: LongTermDebtAndCapitalLeaseObligationsCurrent to us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl1">Current portion</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl1" xlink:title="label: LongTermDebtAndCapitalLeaseObligationsCurrent to us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_lbl1" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_LongTermDebtTextBlock_lbl" xml:lang="en-US" id="us-gaap_LongTermDebtTextBlock_lbl">LONG-TERM DEBT</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtTextBlock" xlink:to="us-gaap_LongTermDebtTextBlock_lbl" xlink:title="label: LongTermDebtTextBlock to us-gaap_LongTermDebtTextBlock_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_LongTermDebtTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_LongTermDebtTextBlock_lbl1" xml:lang="en-US" id="us-gaap_LongTermDebtTextBlock_lbl1">Long-term Debt [Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LongTermDebtTextBlock" xlink:to="us-gaap_LongTermDebtTextBlock_lbl1" xlink:title="label: LongTermDebtTextBlock to us-gaap_LongTermDebtTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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" />
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    <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" />
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    <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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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 provided by (used in) financing activities</link:label>
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    <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>
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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>
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    <link:label xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl">Net income attributable to noncontrolling interests</link:label>
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    <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>
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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" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xml:lang="en-US" id="us-gaap_NonoperatingIncomeExpenseAbstract_lbl">Other income (expense):</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:title="label: NonoperatingIncomeExpenseAbstract to us-gaap_NonoperatingIncomeExpenseAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="NoncontrollingInterestMember" xlink:title="NoncontrollingInterestMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_NoncontrollingInterestMember_lbl" xml:lang="en-US" id="us-gaap_NoncontrollingInterestMember_lbl">Non-controlling Interests [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncontrollingInterestMember" xlink:to="us-gaap_NoncontrollingInterestMember_lbl" xlink:title="label: NoncontrollingInterestMember to us-gaap_NoncontrollingInterestMember_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="OperatingIncomeLoss" xlink:title="OperatingIncomeLoss" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_OperatingIncomeLoss_lbl" xml:lang="en-US" id="us-gaap_OperatingIncomeLoss_lbl">Operating income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl" xlink:title="label: OperatingIncomeLoss to us-gaap_OperatingIncomeLoss_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OperatingIncomeLoss_lbl1" xml:lang="en-US" id="us-gaap_OperatingIncomeLoss_lbl1">Operating Income (Loss)</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="OperatingExpensesAbstract" xlink:title="OperatingExpensesAbstract" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl" xlink:title="label: OperatingExpenses to us-gaap_OperatingExpenses_lbl" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherAssetsNoncurrent_lbl1" xml:lang="en-US" id="us-gaap_OtherAssetsNoncurrent_lbl1">Other Assets, Noncurrent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl1" xlink:title="label: OtherAssetsNoncurrent to us-gaap_OtherAssetsNoncurrent_lbl1" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_OtherAssetsCurrent_lbl" xml:lang="en-US" id="us-gaap_OtherAssetsCurrent_lbl">Other current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent_lbl" xlink:title="label: OtherAssetsCurrent to us-gaap_OtherAssetsCurrent_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherAssetsCurrent_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherAssetsCurrent_lbl1" xml:lang="en-US" id="us-gaap_OtherAssetsCurrent_lbl1">Other Assets, Current</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherAssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent_lbl1" xlink:title="label: OtherAssetsCurrent to us-gaap_OtherAssetsCurrent_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:title="OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" />
    <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 income (loss), 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" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeNoncontrollingInterestTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherComprehensiveIncomeNoncontrollingInterestTextBlock_lbl" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeNoncontrollingInterestTextBlock_lbl">CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME BY COMPONENT</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeNoncontrollingInterestTextBlock" xlink:to="us-gaap_OtherComprehensiveIncomeNoncontrollingInterestTextBlock_lbl" xlink:title="label: OtherComprehensiveIncomeNoncontrollingInterestTextBlock to us-gaap_OtherComprehensiveIncomeNoncontrollingInterestTextBlock_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="OtherComprehensiveIncomeLossTax" xlink:title="OtherComprehensiveIncomeLossTax" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_OtherComprehensiveIncomeLossTax_lbl" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeLossTax_lbl">Other comprehensive income (loss), tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossTax_lbl" xlink:title="label: OtherComprehensiveIncomeLossTax to us-gaap_OtherComprehensiveIncomeLossTax_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossTax_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_OtherComprehensiveIncomeLossTax_lbl1" xml:lang="en-US" id="us-gaap_OtherComprehensiveIncomeLossTax_lbl1">Other comprehensive income, tax</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherComprehensiveIncomeLossTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossTax_lbl1" xlink:title="label: OtherComprehensiveIncomeLossTax to us-gaap_OtherComprehensiveIncomeLossTax_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/label" 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:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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>
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    <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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <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" />
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    <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">Dividend paid to noncontrolling interest</link:label>
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    <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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="PaymentsToAcquireBusinessesGross" xlink:title="PaymentsToAcquireBusinessesGross" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xml:lang="en-US" id="us-gaap_PaymentsToAcquireBusinessesGross_lbl">Acquisition of business</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PaymentsToAcquireBusinessesGross_lbl1" xml:lang="en-US" id="us-gaap_PaymentsToAcquireBusinessesGross_lbl1">Payments to Acquire Businesses, Gross</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PaymentsToAcquireBusinessesGross" xlink:to="us-gaap_PaymentsToAcquireBusinessesGross_lbl1" xlink:title="label: PaymentsToAcquireBusinessesGross to us-gaap_PaymentsToAcquireBusinessesGross_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <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/2018/elts/us-gaap-2018-01-31.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>
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    <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/2018/elts/us-gaap-2018-01-31.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>
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    <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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
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    <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>
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    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromMinorityShareholders_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromMinorityShareholders_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromMinorityShareholders_lbl">Contribution from noncontrolling interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromMinorityShareholders" xlink:to="us-gaap_ProceedsFromMinorityShareholders_lbl" xlink:title="label: ProceedsFromMinorityShareholders to us-gaap_ProceedsFromMinorityShareholders_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromSaleOfInvestmentProjects" xlink:label="ProceedsFromSaleOfInvestmentProjects" xlink:title="ProceedsFromSaleOfInvestmentProjects" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfInvestmentProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromSaleOfInvestmentProjects_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromSaleOfInvestmentProjects_lbl">Proceeds from sale of investment</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromSaleOfInvestmentProjects" xlink:to="us-gaap_ProceedsFromSaleOfInvestmentProjects_lbl" xlink:title="label: ProceedsFromSaleOfInvestmentProjects to us-gaap_ProceedsFromSaleOfInvestmentProjects_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:label="ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:title="ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions" xlink:to="us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_lbl" xlink:title="label: ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions to us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="ProceedsFromStockOptionsExercised" xlink:title="ProceedsFromStockOptionsExercised" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProceedsFromStockOptionsExercised_lbl" xml:lang="en-US" id="us-gaap_ProceedsFromStockOptionsExercised_lbl">Cash received from option exercises</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProceedsFromStockOptionsExercised" xlink:to="us-gaap_ProceedsFromStockOptionsExercised_lbl" xlink:title="label: ProceedsFromStockOptionsExercised to us-gaap_ProceedsFromStockOptionsExercised_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="ProfitLoss" xlink:title="ProfitLoss" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ProfitLoss_lbl" xml:lang="en-US" id="us-gaap_ProfitLoss_lbl">Net income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl" xlink:title="label: ProfitLoss to us-gaap_ProfitLoss_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_ProfitLoss_lbl1" xml:lang="en-US" id="us-gaap_ProfitLoss_lbl1">Net income</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl1" xlink:title="label: ProfitLoss to us-gaap_ProfitLoss_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="PropertyPlantAndEquipmentByTypeAxis" xlink:title="PropertyPlantAndEquipmentByTypeAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl">Property, Plant and Equipment, Type [Axis]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:title="label: PropertyPlantAndEquipmentLineItems to us-gaap_PropertyPlantAndEquipmentLineItems_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentDisclosureTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" xlink:title="label: PropertyPlantAndEquipmentDisclosureTextBlock to us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl" />
    <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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentDisclosureTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl1" xlink:title="label: PropertyPlantAndEquipmentDisclosureTextBlock to us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="PropertyPlantAndEquipmentGross" xlink:title="PropertyPlantAndEquipmentGross" />
    <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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentGross" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:title="label: PropertyPlantAndEquipmentGross to us-gaap_PropertyPlantAndEquipmentGross_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="PropertyPlantAndEquipmentTypeDomain" xlink:title="PropertyPlantAndEquipmentTypeDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl">Property, Plant and Equipment, Type [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:title="label: PropertyPlantAndEquipmentTypeDomain to us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="PropertyPlantAndEquipmentNet" xlink:title="PropertyPlantAndEquipmentNet" />
    <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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:title="label: PropertyPlantAndEquipmentNet to us-gaap_PropertyPlantAndEquipmentNet_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_PropertyPlantAndEquipmentNet_lbl1" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentNet_lbl1">Property, plant and equipment, net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl1" xlink:title="label: PropertyPlantAndEquipmentNet to us-gaap_PropertyPlantAndEquipmentNet_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract" xlink:label="PropertyPlantAndEquipmentNetByTypeAbstract" xlink:title="PropertyPlantAndEquipmentNetByTypeAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl" xml:lang="en-US" id="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_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="PropertyPlantAndEquipmentNetByTypeAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl" xlink:title="label: PropertyPlantAndEquipmentNetByTypeAbstract to us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_lbl" />
    <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:label xlink:type="resource" xlink:label="us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted_lbl" xml:lang="en-US" id="us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted_lbl">Outstanding commitments for capital expenditure</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl">Exercisable at end of period (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl">Weighted-average grant date fair value of options granted (in dollars per share)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl">Outstanding at end of period (in shares)</link:label>
    <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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl">Aggregate intrinsic value, Outstanding at end of period</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl">Stock options, additional disclosures [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl1" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl1">Stock Options [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl1" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl">Maximum number of shares of common stock that may be issued (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms" xlink:label="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms" xlink:title="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl">Date and terms of plan modification</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl1" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl1">Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Description and Terms</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl1" xlink:title="label: ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms to us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationDescriptionAndTerms_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:title="ShareBasedCompensationOptionAndIncentivePlansPolicy" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:title="label: ShareBasedCompensationOptionAndIncentivePlansPolicy to us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:title="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xml:lang="en-US" id="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl">Equity Award [Domain]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:title="label: ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain to us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:label="SharesOutstanding" xlink:title="SharesOutstanding" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl" xlink:title="label: SharesOutstanding to us-gaap_SharesOutstanding_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl1" xlink:title="label: SharesOutstanding to us-gaap_SharesOutstanding_lbl1" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SharesOutstanding" xlink:to="us-gaap_SharesOutstanding_lbl2" xlink:title="label: SharesOutstanding to us-gaap_SharesOutstanding_lbl2" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementScenarioAxis" xlink:to="us-gaap_StatementScenarioAxis_lbl" xlink:title="label: StatementScenarioAxis to us-gaap_StatementScenarioAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="StatementOfFinancialPositionAbstract" xlink:title="StatementOfFinancialPositionAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US" id="us-gaap_StatementOfFinancialPositionAbstract_lbl">Condensed Consolidated Balance Sheets (unaudited) [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:title="label: StatementOfFinancialPositionAbstract to us-gaap_StatementOfFinancialPositionAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:title="StatementOfIncomeAndComprehensiveIncomeAbstract" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:to="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_lbl" xlink:title="label: StatementOfIncomeAndComprehensiveIncomeAbstract to us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:title="label: StatementOfCashFlowsAbstract to us-gaap_StatementOfCashFlowsAbstract_lbl" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockCompensationPlanMember" xlink:label="StockCompensationPlanMember" xlink:title="StockCompensationPlanMember" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockCompensationPlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_StockCompensationPlanMember_lbl" xml:lang="en-US" id="us-gaap_StockCompensationPlanMember_lbl">Share-Based Payment Awards [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_StockCompensationPlanMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockCompensationPlanMember_lbl1" xml:lang="en-US" id="us-gaap_StockCompensationPlanMember_lbl1">Stock Compensation Plan [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockCompensationPlanMember" xlink:to="us-gaap_StockCompensationPlanMember_lbl1" xlink:title="label: StockCompensationPlanMember to us-gaap_StockCompensationPlanMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchaseProgramAuthorizedAmount1" xlink:label="StockRepurchaseProgramAuthorizedAmount1" xlink:title="StockRepurchaseProgramAuthorizedAmount1" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl" xml:lang="en-US" id="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl">Authorized amount of stock to be repurchased</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramAuthorizedAmount1" xlink:to="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl" xlink:title="label: StockRepurchaseProgramAuthorizedAmount1 to us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl1" xml:lang="en-US" id="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl1">Stock Repurchase Program, Authorized Amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramAuthorizedAmount1" xlink:to="us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl1" xlink:title="label: StockRepurchaseProgramAuthorizedAmount1 to us-gaap_StockRepurchaseProgramAuthorizedAmount1_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:title="StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl">Restricted stock awards vesting and expense (in shares)</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:title="label: StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures to us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/label" 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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" xlink:title="label: StockIssuedDuringPeriodSharesShareBasedCompensation to us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:label="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:title="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xml:lang="en-US" id="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl">Restricted stock awards vesting and expense</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures" xlink:to="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:title="label: StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures to us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/label" 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>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockIssuedDuringPeriodValueShareBasedCompensation" xlink:to="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xlink:title="label: StockIssuedDuringPeriodValueShareBasedCompensation to us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl">Total equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:title="label: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl1" xlink:title="label: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl1" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl2" xml:lang="en-US" id="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl2">Beginning balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl2" xlink:title="label: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl2" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl3" xml:lang="en-US" id="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl3">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl3" xlink:title="label: StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest to us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="StockholdersEquityNoteDisclosureTextBlock" xlink:title="StockholdersEquityNoteDisclosureTextBlock" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl">CHANGES IN EQUITY</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:title="label: StockholdersEquityNoteDisclosureTextBlock to us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:title="StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl">Equity:</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:label="StockholdersEquityOther" xlink:title="StockholdersEquityOther" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityOther_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_StockholdersEquityOther_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquityOther_lbl">Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityOther" xlink:to="us-gaap_StockholdersEquityOther_lbl" xlink:title="label: StockholdersEquityOther to us-gaap_StockholdersEquityOther_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquityOther_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquityOther_lbl1" xml:lang="en-US" id="us-gaap_StockholdersEquityOther_lbl1">Stockholders' Equity, Other</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquityOther" xlink:to="us-gaap_StockholdersEquityOther_lbl1" xlink:title="label: StockholdersEquityOther to us-gaap_StockholdersEquityOther_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="StockholdersEquity" xlink:title="StockholdersEquity" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_StockholdersEquity_lbl" xml:lang="en-US" id="us-gaap_StockholdersEquity_lbl">Total Photronics, Inc. shareholders' equity</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl" xlink:title="label: StockholdersEquity to us-gaap_StockholdersEquity_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl1" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="us-gaap_StockholdersEquity_lbl1" xml:lang="en-US" id="us-gaap_StockholdersEquity_lbl1">Ending Balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl1" xlink:title="label: StockholdersEquity to us-gaap_StockholdersEquity_lbl1" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="us-gaap_StockholdersEquity_lbl2" xml:lang="en-US" id="us-gaap_StockholdersEquity_lbl2">Beginning Balance</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl2" xlink:title="label: StockholdersEquity to us-gaap_StockholdersEquity_lbl2" />
    <link:label xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_StockholdersEquity_lbl3" xml:lang="en-US" id="us-gaap_StockholdersEquity_lbl3">Stockholders' Equity Attributable to Parent</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl3" xlink:title="label: StockholdersEquity to us-gaap_StockholdersEquity_lbl3" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="SupplementalCashFlowInformationAbstract" xlink:title="SupplementalCashFlowInformationAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xml:lang="en-US" id="us-gaap_SupplementalCashFlowInformationAbstract_lbl">Supplemental disclosure information:</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:title="label: SupplementalCashFlowInformationAbstract to us-gaap_SupplementalCashFlowInformationAbstract_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardAmount" xlink:label="TaxCreditCarryforwardAmount" xlink:title="TaxCreditCarryforwardAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_TaxCreditCarryforwardAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TaxCreditCarryforwardAmount_lbl" xml:lang="en-US" id="us-gaap_TaxCreditCarryforwardAmount_lbl">Tax credit carryforward, amount</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCreditCarryforwardAmount" xlink:to="us-gaap_TaxCreditCarryforwardAmount_lbl" xlink:title="label: TaxCreditCarryforwardAmount to us-gaap_TaxCreditCarryforwardAmount_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardAxis" xlink:label="TaxCreditCarryforwardAxis" xlink:title="TaxCreditCarryforwardAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_TaxCreditCarryforwardAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:title="us-gaap_TaxCreditCarryforwardAxis_lbl" xml:lang="en-US" id="us-gaap_TaxCreditCarryforwardAxis_lbl">Tax Credit Carryforward [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCreditCarryforwardAxis" xlink:to="us-gaap_TaxCreditCarryforwardAxis_lbl" xlink:title="label: TaxCreditCarryforwardAxis to us-gaap_TaxCreditCarryforwardAxis_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_TaxCreditCarryforwardAxis_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TaxCreditCarryforwardAxis_lbl1" xml:lang="en-US" id="us-gaap_TaxCreditCarryforwardAxis_lbl1">Tax Credit Carryforward [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TaxCreditCarryforwardAxis" xlink:to="us-gaap_TaxCreditCarryforwardAxis_lbl1" xlink:title="label: TaxCreditCarryforwardAxis to us-gaap_TaxCreditCarryforwardAxis_lbl1" />
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    <link:label xlink:type="resource" xlink:label="us-gaap_TaxCreditCarryforwardNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TaxCreditCarryforwardNameDomain_lbl" xml:lang="en-US" id="us-gaap_TaxCreditCarryforwardNameDomain_lbl">Tax Credit Carryforward, Name [Domain]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_TreasuryStockMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TreasuryStockMember_lbl1" xml:lang="en-US" id="us-gaap_TreasuryStockMember_lbl1">Treasury Stock [Member]</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="us-gaap_TreasuryStockCommonValue_lbl" xml:lang="en-US" id="us-gaap_TreasuryStockCommonValue_lbl">Treasury stock repurchased - amount</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonValue_lbl1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_TreasuryStockCommonValue_lbl1" xml:lang="en-US" id="us-gaap_TreasuryStockCommonValue_lbl1">Treasury stock, 778 shares at July 29, 2018</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockCommonValue" xlink:to="us-gaap_TreasuryStockCommonValue_lbl1" xlink:title="label: TreasuryStockCommonValue to us-gaap_TreasuryStockCommonValue_lbl1" />
    <link:label xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonValue_lbl2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_TreasuryStockCommonValue_lbl2" xml:lang="en-US" id="us-gaap_TreasuryStockCommonValue_lbl2">Treasury Stock, Common, Value</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedAbstract_lbl" xml:lang="en-US" id="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedAbstract_lbl">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:title="UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" />
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="UnrecognizedTaxBenefits" xlink:title="UnrecognizedTaxBenefits" />
    <link:label xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_UnrecognizedTaxBenefits_lbl" xml:lang="en-US" id="us-gaap_UnrecognizedTaxBenefits_lbl">Unrecognized tax benefits</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="UnrecognizedTaxBenefits" xlink:to="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:title="label: UnrecognizedTaxBenefits to us-gaap_UnrecognizedTaxBenefits_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:title="ValuationAllowanceDeferredTaxAssetChangeInAmount" />
    <link:label xlink:type="resource" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:title="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xml:lang="en-US" id="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl">Valuation allowance change</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedLiabilitiesRecourse_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedLiabilitiesRecourse_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedLiabilitiesRecourse_lbl">Consolidation liabilities, recourse</link:label>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract" xlink:label="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract" xlink:title="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract_lbl">Carrying amounts of assets and liabilities along with exposure to loss related to assets and liabilities [Abstract]</link:label>
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    <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">Primary Beneficiary [Member]</link:label>
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    <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 loss exposure, amount</link:label>
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    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl">Total assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedCarryingAmountAssets" xlink:to="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl" xlink:title="label: VariableInterestEntityConsolidatedCarryingAmountAssets to us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl1" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl1">Variable Interest Entity, Consolidated, Carrying Amount, Assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedCarryingAmountAssets" xlink:to="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl1" xlink:title="label: VariableInterestEntityConsolidatedCarryingAmountAssets to us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:label="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:title="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl">Net assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:to="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl" xlink:title="label: VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet to us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl1" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl1">Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet" xlink:to="us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl1" xlink:title="label: VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet to us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedAssetsCurrent" xlink:label="VariableInterestEntityConsolidatedAssetsCurrent" xlink:title="VariableInterestEntityConsolidatedAssetsCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedAssetsCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedAssetsCurrent_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedAssetsCurrent_lbl">Current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedAssetsCurrent" xlink:to="us-gaap_VariableInterestEntityConsolidatedAssetsCurrent_lbl" xlink:title="label: VariableInterestEntityConsolidatedAssetsCurrent to us-gaap_VariableInterestEntityConsolidatedAssetsCurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedLiabilitiesCurrent" xlink:label="VariableInterestEntityConsolidatedLiabilitiesCurrent" xlink:title="VariableInterestEntityConsolidatedLiabilitiesCurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedLiabilitiesCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedLiabilitiesCurrent_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedLiabilitiesCurrent_lbl">Current liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedLiabilitiesCurrent" xlink:to="us-gaap_VariableInterestEntityConsolidatedLiabilitiesCurrent_lbl" xlink:title="label: VariableInterestEntityConsolidatedLiabilitiesCurrent to us-gaap_VariableInterestEntityConsolidatedLiabilitiesCurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis" xlink:label="VariableInterestEntitiesByClassificationOfEntityAxis" xlink:title="VariableInterestEntitiesByClassificationOfEntityAxis" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_lbl">Variable Interest Entities [Axis]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntitiesByClassificationOfEntityAxis" xlink:to="us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_lbl" xlink:title="label: VariableInterestEntitiesByClassificationOfEntityAxis to us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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">Not Primary Beneficiary [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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedAssetsNoncurrent" xlink:label="VariableInterestEntityConsolidatedAssetsNoncurrent" xlink:title="VariableInterestEntityConsolidatedAssetsNoncurrent" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedAssetsNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedAssetsNoncurrent_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedAssetsNoncurrent_lbl">Non-current assets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedAssetsNoncurrent" xlink:to="us-gaap_VariableInterestEntityConsolidatedAssetsNoncurrent_lbl" xlink:title="label: VariableInterestEntityConsolidatedAssetsNoncurrent to us-gaap_VariableInterestEntityConsolidatedAssetsNoncurrent_lbl" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities" xlink:label="VariableInterestEntityConsolidatedCarryingAmountLiabilities" xlink:title="VariableInterestEntityConsolidatedCarryingAmountLiabilities" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl">Total liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedCarryingAmountLiabilities" xlink:to="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl" xlink:title="label: VariableInterestEntityConsolidatedCarryingAmountLiabilities to us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl" />
    <link:label xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl1" xml:lang="en-US" id="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl1">Variable Interest Entity, Consolidated, Carrying Amount, Liabilities</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityConsolidatedCarryingAmountLiabilities" xlink:to="us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl1" xlink:title="label: VariableInterestEntityConsolidatedCarryingAmountLiabilities to us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities_lbl1" />
    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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/2018/elts/us-gaap-2018-01-31.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>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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/2018/elts/srt-2018-01-31.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="http://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 under Construction [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="http://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:loc xlink:type="locator" xlink:href="http://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:loc xlink:type="locator" xlink:href="http://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-20180729.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-20180729.xsd#plab_IncomeTaxDisclosureTable" xlink:label="IncomeTaxDisclosureTable" xlink:title="IncomeTaxDisclosureTable" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTable" xlink:to="plab_IncomeTaxDisclosureTable_lbl" xlink:title="label: IncomeTaxDisclosureTable to plab_IncomeTaxDisclosureTable_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_IncomeTaxDisclosureTable_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_IncomeTaxDisclosureTable_lbl1" xml:lang="en-US" id="plab_IncomeTaxDisclosureTable_lbl1">Income Tax Disclosure [Table]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureTable" xlink:to="plab_IncomeTaxDisclosureTable_lbl1" xlink:title="label: IncomeTaxDisclosureTable to plab_IncomeTaxDisclosureTable_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_IncomeTaxDisclosureLineItems" xlink:label="IncomeTaxDisclosureLineItems" xlink:title="IncomeTaxDisclosureLineItems" />
    <link:label xlink:type="resource" xlink:label="plab_IncomeTaxDisclosureLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_IncomeTaxDisclosureLineItems_lbl" xml:lang="en-US" id="plab_IncomeTaxDisclosureLineItems_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>
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    <link:label xlink:type="resource" xlink:label="plab_IncomeTaxDisclosureLineItems_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_IncomeTaxDisclosureLineItems_lbl1" xml:lang="en-US" id="plab_IncomeTaxDisclosureLineItems_lbl1">Income Tax Disclosure [Line Items]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IncomeTaxDisclosureLineItems" xlink:to="plab_IncomeTaxDisclosureLineItems_lbl1" xlink:title="label: IncomeTaxDisclosureLineItems to plab_IncomeTaxDisclosureLineItems_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.xsd#plab_EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:label="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" xlink:title="EffectiveIncomeTaxRateReconciliationAtForeignStatutoryIncomeTaxRatePercent" />
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    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsNotInCashPercent" xlink:label="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsNotInCashPercent" xlink:title="EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsNotInCashPercent" />
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    <link:label xlink:type="resource" xlink:label="plab_TaiwanAgencyOfTheMinistryOfFinanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_TaiwanAgencyOfTheMinistryOfFinanceMember_lbl" xml:lang="en-US" id="plab_TaiwanAgencyOfTheMinistryOfFinanceMember_lbl">Designated tax department of the government of Taiwan.</link:label>
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    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.xsd#plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense" xlink:label="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense" xlink:title="TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense" />
    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense_lbl" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense_lbl">Amount of reasonable estimate for income tax expense 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>
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    <link:label xlink:type="resource" xlink:label="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense_lbl2" xml:lang="en-US" id="plab_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense_lbl2">Change in tax rate, deferred tax asset, provisional income tax expense</link:label>
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    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract" xlink:label="SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract" xlink:title="SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract_lbl1" xml:lang="en-US" id="plab_SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract_lbl1">Significant Change in Unrecognized Tax Benefits Reasonably Possible [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract" xlink:to="plab_SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract_lbl1" xlink:title="label: SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract to plab_SignificantChangeInUnrecognizedTaxBenefitsReasonablyPossibleAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_EffectOfTaxCutsAndJobsActOf2017Abstract" xlink:label="EffectOfTaxCutsAndJobsActOf2017Abstract" xlink:title="EffectOfTaxCutsAndJobsActOf2017Abstract" />
    <link:label xlink:type="resource" xlink:label="plab_EffectOfTaxCutsAndJobsActOf2017Abstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_EffectOfTaxCutsAndJobsActOf2017Abstract_lbl1" xml:lang="en-US" id="plab_EffectOfTaxCutsAndJobsActOf2017Abstract_lbl1">Effect of Tax Cuts and Jobs Act of 2017 [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EffectOfTaxCutsAndJobsActOf2017Abstract" xlink:to="plab_EffectOfTaxCutsAndJobsActOf2017Abstract_lbl1" xlink:title="label: EffectOfTaxCutsAndJobsActOf2017Abstract to plab_EffectOfTaxCutsAndJobsActOf2017Abstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.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>
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    <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" />
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    <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" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ConvertibleSeniorNotesDueOnApril2019Member" xlink:to="plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl3" xlink:title="label: ConvertibleSeniorNotesDueOnApril2019Member to plab_ConvertibleSeniorNotesDueOnApril2019Member_lbl3" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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>
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    <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-20180729.xsd#plab_VariableInterestEntityAbstract" xlink:label="VariableInterestEntityAbstract" xlink:title="VariableInterestEntityAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_VariableInterestEntityAbstract_lbl1" xml:lang="en-US" id="plab_VariableInterestEntityAbstract_lbl1">Variable Interest Entity [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityAbstract" xlink:to="plab_VariableInterestEntityAbstract_lbl1" xlink:title="label: VariableInterestEntityAbstract to plab_VariableInterestEntityAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_PhotronicsSingaporePteLtdMember" xlink:label="PhotronicsSingaporePteLtdMember" xlink:title="PhotronicsSingaporePteLtdMember" />
    <link:label xlink:type="resource" xlink:label="plab_PhotronicsSingaporePteLtdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_PhotronicsSingaporePteLtdMember_lbl" xml:lang="en-US" id="plab_PhotronicsSingaporePteLtdMember_lbl">Refers to wholly owned Singapore subsidiary.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PhotronicsSingaporePteLtdMember" xlink:to="plab_PhotronicsSingaporePteLtdMember_lbl" xlink:title="label: PhotronicsSingaporePteLtdMember to plab_PhotronicsSingaporePteLtdMember_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_PhotronicsSingaporePteLtdMember_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_PhotronicsSingaporePteLtdMember_lbl1" xml:lang="en-US" id="plab_PhotronicsSingaporePteLtdMember_lbl1">Photronics Singapore Pte, Ltd [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="PhotronicsSingaporePteLtdMember" xlink:to="plab_PhotronicsSingaporePteLtdMember_lbl1" xlink:title="label: PhotronicsSingaporePteLtdMember to plab_PhotronicsSingaporePteLtdMember_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_VariableInterestEntityFutureSupportToBeProvided" xlink:label="VariableInterestEntityFutureSupportToBeProvided" xlink:title="VariableInterestEntityFutureSupportToBeProvided" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityFutureSupportToBeProvided_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_VariableInterestEntityFutureSupportToBeProvided_lbl" xml:lang="en-US" id="plab_VariableInterestEntityFutureSupportToBeProvided_lbl">Amount of future support planned to be provided to variable interest entity.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityFutureSupportToBeProvided" xlink:to="plab_VariableInterestEntityFutureSupportToBeProvided_lbl" xlink:title="label: VariableInterestEntityFutureSupportToBeProvided to plab_VariableInterestEntityFutureSupportToBeProvided_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityFutureSupportToBeProvided_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_VariableInterestEntityFutureSupportToBeProvided_lbl1" xml:lang="en-US" id="plab_VariableInterestEntityFutureSupportToBeProvided_lbl1">Variable Interest Entity Future Support To Be Provided</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityFutureSupportToBeProvided" xlink:to="plab_VariableInterestEntityFutureSupportToBeProvided_lbl1" xlink:title="label: VariableInterestEntityFutureSupportToBeProvided to plab_VariableInterestEntityFutureSupportToBeProvided_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityFutureSupportToBeProvided_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_VariableInterestEntityFutureSupportToBeProvided_lbl2" xml:lang="en-US" id="plab_VariableInterestEntityFutureSupportToBeProvided_lbl2">Future support to be provided</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityFutureSupportToBeProvided" xlink:to="plab_VariableInterestEntityFutureSupportToBeProvided_lbl2" xlink:title="label: VariableInterestEntityFutureSupportToBeProvided to plab_VariableInterestEntityFutureSupportToBeProvided_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20" xlink:label="TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20" xlink:title="TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20" />
    <link:label xlink:type="resource" xlink:label="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl" xml:lang="en-US" id="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl">Refers to Number of consecutive months for Trigger of option to purchase, or put, their interest from, or to, other party if ownership interest fall below 20%, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</link:label>
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    <link:label xlink:type="resource" xlink:label="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl1" xml:lang="en-US" id="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl1">Trigger Period for Option to Purchase, or Put, Their Interest from, or to, Other Party if Ownership Interest Fall Below 20%</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20" xlink:to="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl1" xlink:title="label: TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20 to plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl2" xml:lang="en-US" id="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl2">Trigger period for option to purchase, or put, their interest from, or to, other party if ownership interest falls below 20%</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20" xlink:to="plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl2" xlink:title="label: TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20 to plab_TriggerPeriodForOptionToPurchaseOrPutTheirInterestFromOrToOtherPartyIfOwnershipInterestFallBelow20_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_VariableInterestEntityInitialTermOfAgreement" xlink:label="VariableInterestEntityInitialTermOfAgreement" xlink:title="VariableInterestEntityInitialTermOfAgreement" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityInitialTermOfAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_VariableInterestEntityInitialTermOfAgreement_lbl" xml:lang="en-US" id="plab_VariableInterestEntityInitialTermOfAgreement_lbl">Refer to initial term of agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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="VariableInterestEntityInitialTermOfAgreement" xlink:to="plab_VariableInterestEntityInitialTermOfAgreement_lbl" xlink:title="label: VariableInterestEntityInitialTermOfAgreement to plab_VariableInterestEntityInitialTermOfAgreement_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityInitialTermOfAgreement_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_VariableInterestEntityInitialTermOfAgreement_lbl1" xml:lang="en-US" id="plab_VariableInterestEntityInitialTermOfAgreement_lbl1">Variable Interest Entity, Initial Term of Agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityInitialTermOfAgreement" xlink:to="plab_VariableInterestEntityInitialTermOfAgreement_lbl1" xlink:title="label: VariableInterestEntityInitialTermOfAgreement to plab_VariableInterestEntityInitialTermOfAgreement_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_VariableInterestEntityInitialTermOfAgreement_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_VariableInterestEntityInitialTermOfAgreement_lbl2" xml:lang="en-US" id="plab_VariableInterestEntityInitialTermOfAgreement_lbl2">Initial term of agreement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="VariableInterestEntityInitialTermOfAgreement" xlink:to="plab_VariableInterestEntityInitialTermOfAgreement_lbl2" xlink:title="label: VariableInterestEntityInitialTermOfAgreement to plab_VariableInterestEntityInitialTermOfAgreement_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty" xlink:label="NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty" xlink:title="NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl" xml:lang="en-US" id="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl">Refers to minimum number of business days for obtaining required approvals and clearance for exiting party from the agreement, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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="NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty" xlink:to="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl" xlink:title="label: NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty to plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl1" xml:lang="en-US" id="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl1">Number of Business Days for Obtaining Required Approvals and Clearance for Exiting Party</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty" xlink:to="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl1" xlink:title="label: NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty to plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl2" xml:lang="en-US" id="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl2">Number of business days for obtaining required approvals and clearance for exiting party</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty" xlink:to="plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl2" xlink:title="label: NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty to plab_NumberOfBusinessDaysForObtainingRequiredApprovalsAndClearanceForExitingParty_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_CapitalLeaseObligationPayableThrough2018Member" xlink:label="CapitalLeaseObligationPayableThrough2018Member" xlink:title="CapitalLeaseObligationPayableThrough2018Member" />
    <link:label xlink:type="resource" xlink:label="plab_CapitalLeaseObligationPayableThrough2018Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_CapitalLeaseObligationPayableThrough2018Member_lbl" xml:lang="en-US" id="plab_CapitalLeaseObligationPayableThrough2018Member_lbl">A borrowing recorded for a lease meeting the criteria for capitalization. A lease is defined as an agreement conveying the right to use property, plant, or equipment (land or depreciable assets) usually for a stated period of time.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalLeaseObligationPayableThrough2018Member" xlink:to="plab_CapitalLeaseObligationPayableThrough2018Member_lbl" xlink:title="label: CapitalLeaseObligationPayableThrough2018Member to plab_CapitalLeaseObligationPayableThrough2018Member_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_CapitalLeaseObligationPayableThrough2018Member_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_CapitalLeaseObligationPayableThrough2018Member_lbl1" xml:lang="en-US" id="plab_CapitalLeaseObligationPayableThrough2018Member_lbl1">Capital lease obligation payable through 2018 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalLeaseObligationPayableThrough2018Member" xlink:to="plab_CapitalLeaseObligationPayableThrough2018Member_lbl1" xlink:title="label: CapitalLeaseObligationPayableThrough2018Member to plab_CapitalLeaseObligationPayableThrough2018Member_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_CapitalLeaseObligationPayableThrough2018Member_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_CapitalLeaseObligationPayableThrough2018Member_lbl2" xml:lang="en-US" id="plab_CapitalLeaseObligationPayableThrough2018Member_lbl2">2.77% Capital Lease Obligation Payable through July 2018 [Member]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CapitalLeaseObligationPayableThrough2018Member" xlink:to="plab_CapitalLeaseObligationPayableThrough2018Member_lbl2" xlink:title="label: CapitalLeaseObligationPayableThrough2018Member to plab_CapitalLeaseObligationPayableThrough2018Member_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.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-20180729.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-20180729.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-20180729.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-20180729.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-20180729.xsd#plab_BasisOfFinancialStatementPresentationAbstract" xlink:label="BasisOfFinancialStatementPresentationAbstract" xlink:title="BasisOfFinancialStatementPresentationAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_BasisOfFinancialStatementPresentationAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_BasisOfFinancialStatementPresentationAbstract_lbl1" xml:lang="en-US" id="plab_BasisOfFinancialStatementPresentationAbstract_lbl1">BASIS OF FINANCIAL STATEMENT PRESENTATION [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BasisOfFinancialStatementPresentationAbstract" xlink:to="plab_BasisOfFinancialStatementPresentationAbstract_lbl1" xlink:title="label: BasisOfFinancialStatementPresentationAbstract to plab_BasisOfFinancialStatementPresentationAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.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" />
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    <link:loc xlink:type="locator" xlink:href="plab-20180729.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>
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    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_DocumentAndEntityInformationAbstract" xlink:label="DocumentAndEntityInformationAbstract" xlink:title="DocumentAndEntityInformationAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_DocumentAndEntityInformationAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_DocumentAndEntityInformationAbstract_lbl1" xml:lang="en-US" id="plab_DocumentAndEntityInformationAbstract_lbl1">Document and Entity Information [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DocumentAndEntityInformationAbstract" xlink:to="plab_DocumentAndEntityInformationAbstract_lbl1" xlink:title="label: DocumentAndEntityInformationAbstract to plab_DocumentAndEntityInformationAbstract_lbl1" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.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-20180729.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-20180729.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:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_StockRepurchaseProgramAbstract" xlink:label="StockRepurchaseProgramAbstract" xlink:title="StockRepurchaseProgramAbstract" />
    <link:label xlink:type="resource" xlink:label="plab_StockRepurchaseProgramAbstract_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_StockRepurchaseProgramAbstract_lbl1" xml:lang="en-US" id="plab_StockRepurchaseProgramAbstract_lbl1">Stock Repurchase Program [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramAbstract" xlink:to="plab_StockRepurchaseProgramAbstract_lbl1" xlink:title="label: StockRepurchaseProgramAbstract to plab_StockRepurchaseProgramAbstract_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_StockRepurchaseProgramAbstract_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_StockRepurchaseProgramAbstract_lbl2" xml:lang="en-US" id="plab_StockRepurchaseProgramAbstract_lbl2">Stock Repurchase Program [Abstract]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="StockRepurchaseProgramAbstract" xlink:to="plab_StockRepurchaseProgramAbstract_lbl2" xlink:title="label: StockRepurchaseProgramAbstract to plab_StockRepurchaseProgramAbstract_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.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-20180729.xsd#plab_TreasuryStockAmountPendingSettlement" xlink:label="TreasuryStockAmountPendingSettlement" xlink:title="TreasuryStockAmountPendingSettlement" />
    <link:label xlink:type="resource" xlink:label="plab_TreasuryStockAmountPendingSettlement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="plab_TreasuryStockAmountPendingSettlement_lbl" xml:lang="en-US" id="plab_TreasuryStockAmountPendingSettlement_lbl">Dollar amount of share repurchases that were pending settlement at the balance sheet date.</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockAmountPendingSettlement" xlink:to="plab_TreasuryStockAmountPendingSettlement_lbl" xlink:title="label: TreasuryStockAmountPendingSettlement to plab_TreasuryStockAmountPendingSettlement_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_TreasuryStockAmountPendingSettlement_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_TreasuryStockAmountPendingSettlement_lbl1" xml:lang="en-US" id="plab_TreasuryStockAmountPendingSettlement_lbl1">Treasury Stock Amount Pending Settlement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockAmountPendingSettlement" xlink:to="plab_TreasuryStockAmountPendingSettlement_lbl1" xlink:title="label: TreasuryStockAmountPendingSettlement to plab_TreasuryStockAmountPendingSettlement_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_TreasuryStockAmountPendingSettlement_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_TreasuryStockAmountPendingSettlement_lbl2" xml:lang="en-US" id="plab_TreasuryStockAmountPendingSettlement_lbl2">Treasury stock - amount pending settlement</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockAmountPendingSettlement" xlink:to="plab_TreasuryStockAmountPendingSettlement_lbl2" xlink:title="label: TreasuryStockAmountPendingSettlement to plab_TreasuryStockAmountPendingSettlement_lbl2" />
    <link:loc xlink:type="locator" xlink:href="plab-20180729.xsd#plab_TreasuryStockPolicyTextBlock" xlink:label="TreasuryStockPolicyTextBlock" xlink:title="TreasuryStockPolicyTextBlock" />
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockPolicyTextBlock" xlink:to="plab_TreasuryStockPolicyTextBlock_lbl" xlink:title="label: TreasuryStockPolicyTextBlock to plab_TreasuryStockPolicyTextBlock_lbl" />
    <link:label xlink:type="resource" xlink:label="plab_TreasuryStockPolicyTextBlock_lbl1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="plab_TreasuryStockPolicyTextBlock_lbl1" xml:lang="en-US" id="plab_TreasuryStockPolicyTextBlock_lbl1">Treasury Stock [Policy Text Block]</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockPolicyTextBlock" xlink:to="plab_TreasuryStockPolicyTextBlock_lbl1" xlink:title="label: TreasuryStockPolicyTextBlock to plab_TreasuryStockPolicyTextBlock_lbl1" />
    <link:label xlink:type="resource" xlink:label="plab_TreasuryStockPolicyTextBlock_lbl2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:title="plab_TreasuryStockPolicyTextBlock_lbl2" xml:lang="en-US" id="plab_TreasuryStockPolicyTextBlock_lbl2">Treasury Stock</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="TreasuryStockPolicyTextBlock" xlink:to="plab_TreasuryStockPolicyTextBlock_lbl2" xlink:title="label: TreasuryStockPolicyTextBlock to plab_TreasuryStockPolicyTextBlock_lbl2" />
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