<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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    <xsd:annotation>
        <xsd:appinfo>
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            <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="msz-2021-01-14_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
            <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="msz-2021-01-14_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
            <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="msz-2021-01-14_lab-pl.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
            <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="http://www.esma.europa.eu/taxonomy/2019-03-27/esef_cor-lab-pl.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
            <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="http://www.esma.europa.eu/taxonomy/2019-03-27/esef_cor-gen-pl.xml" xlink:role="http://www.xbrl.org/2003/role/LinkbaseRef" xlink:type="simple"/>
            <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="http://www.eurofiling.info/eu/fr/xbrl/lab/esef_labelRoles_cor-2019-03-27_lab-pl.xml" xlink:role="http://www.xbrl.org/2003/role/LinkbaseRef" xlink:type="simple"/>
            <link:roleType roleURI="http://www.mz.pl/role/ias_7_role-520000" id="ias_7_role-520000">
                <link:definition>[520000] Statement of cash flows, indirect method</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.mz.pl/role/ias_1_role-420000" id="ias_1_role-420000">
                <link:definition>[420000] Statement of comprehensive income, OCI components presented before tax</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.mz.pl/role/role_000000" id="role_000000">
                <link:definition>[000000] Mandatory mark-up validations</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
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            <link:roleType roleURI="http://www.mz.pl/role/ias_1_role-310000" id="ias_1_role-310000">
                <link:definition>[310000] Statement of comprehensive income, profit or loss, by function of expense</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
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                <link:definition>[000099] Anchoring</link:definition>
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                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.mz.pl/role/ias_1_role-210000" id="ias_1_role-210000">
                <link:definition>[210000] Statement of financial position, current/non-current</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
            </link:roleType>
            <link:roleType roleURI="http://www.mz.pl/role/ias_1_role-610000" id="ias_1_role-610000">
                <link:definition>[610000] Statement of changes in equity</link:definition>
                <link:usedOn>link:presentationLink</link:usedOn>
                <link:usedOn>link:calculationLink</link:usedOn>
                <link:usedOn>link:definitionLink</link:usedOn>
            </link:roleType>
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    <xsd:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
    <xsd:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.xsd"/>
    <xsd:import namespace="http://www.xbrl.org/dtr/type/non-numeric" schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd"/>
    <xsd:import namespace="http://www.xbrl.org/dtr/type/numeric" schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd"/>
    <xsd:import namespace="http://www.xbrl.org/2003/XLink" schemaLocation="http://www.xbrl.org/2003/xl-2003-12-31.xsd"/>
    <xsd:import namespace="http://www.esma.europa.eu/taxonomy/2019-03-27/esef_cor" schemaLocation="http://www.esma.europa.eu/taxonomy/2019-03-27/esef_cor.xsd"/>
    <xsd:element id="msz_AdjustmentsForIncreaseDecreaseInContractAssetsAndContractLiabilities" name="AdjustmentsForIncreaseDecreaseInContractAssetsAndContractLiabilities" abstract="false" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" xbrli:balance="debit"/>
    <xsd:element id="msz_ProfitLossOnSales" name="ProfitLossOnSales" abstract="false" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" xbrli:balance="credit"/>
</xsd:schema>
