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  <link:calculationLink xlink:type="extended" xlink:role="http://www.materialise.com/20181231/role/GoodwillImpairment">
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  <link:calculationLink xlink:type="extended" xlink:role="http://www.materialise.com/20181231/role/DeferredIncome">
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    <link:loc xlink:type="locator" xlink:href="mtls-20181231.xsd#mtls_DeferredMaintenanceAndLicense" xlink:label="DeferredMaintenanceAndLicense" xlink:title="DeferredMaintenanceAndLicense"/>
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    <link:loc xlink:type="locator" xlink:href="mtls-20181231.xsd#mtls_DeferredProjectFees" xlink:label="DeferredProjectFees" xlink:title="DeferredProjectFees"/>
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    <link:loc xlink:type="locator" xlink:href="mtls-20181231.xsd#mtls_DeferredGovernmentGrants" xlink:label="DeferredGovernmentGrants" xlink:title="DeferredGovernmentGrants"/>
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    <link:loc xlink:type="locator" xlink:href="mtls-20181231.xsd#mtls_DeferredOtherIncome" xlink:label="DeferredOtherIncome" xlink:title="DeferredOtherIncome"/>
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