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  <xs:element id="ggg_DefinedBenefitPlanAmortizationOfGainsLossesAndOther" abstract="false" name="DefinedBenefitPlanAmortizationOfGainsLossesAndOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ggg_IntangibleAssetsTranslationAdjustments" abstract="false" name="IntangibleAssetsTranslationAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ggg_ContractorMember" abstract="true" name="ContractorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ggg_PatentsProprietaryTechnologyAndProductDocumentationMember" abstract="true" name="PatentsProprietaryTechnologyAndProductDocumentationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ggg_ProcessMember" abstract="true" name="ProcessMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="ggg_AllowanceforCredits" abstract="false" name="AllowanceforCredits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
