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        <link:definition>082000 - Disclosure - STOCK-BASED COMPENSATION (Tables)</link:definition>
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        <link:definition>082100 - Disclosure - INCOME TAXES (Tables)</link:definition>
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        <link:definition>090100 - Disclosure - DESCRIPTION OF BUSINESS (Details)</link:definition>
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        <link:definition>090200 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, COVID-19 Assessment (Details)</link:definition>
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        <link:definition>090202 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Basic and Diluted Net Income per Common Share (Details)</link:definition>
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  <xs:element name="CapitalFundOfLimitedPartnership" id="acmr_CapitalFundOfLimitedPartnership" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="SubsidiesToBacksideCleanYMTCNationalProjectMember" id="acmr_SubsidiesToBacksideCleanYMTCNationalProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="SubsidiesToTahoeSingleBenchCleanCommencedIn2020Member" id="acmr_SubsidiesToTahoeSingleBenchCleanCommencedIn2020Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="SubsidiesToStressFreePolishingProjectMember" id="acmr_SubsidiesToStressFreePolishingProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="OtherMember" id="acmr_OtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="SubsidiesToPolytetrafluoroethyleneMember" id="acmr_SubsidiesToPolytetrafluoroethyleneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="SubsidiesToElectroCopperPlatingProjectMember" id="acmr_SubsidiesToElectroCopperPlatingProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AdditionalSharesReservedForIssuanceAsDividends" id="acmr_AdditionalSharesReservedForIssuanceAsDividends" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="CommonStockAdditionalSharesAuthorized" id="acmr_CommonStockAdditionalSharesAuthorized" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
</xs:schema>
