<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2008-11-20</periodOfReport>

    <dateOfOriginalSubmission>2008-12-04</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001160165</issuerCik>
        <issuerName>ShengdaTech, Inc.</issuerName>
        <issuerTradingSymbol>SDTH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001395685</rptOwnerCik>
            <rptOwnerName>Saidman Sheldon B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>YOUTH PIONEER PARK</rptOwnerStreet1>
            <rptOwnerStreet2>TAIAN ECON &amp; TECH DEV ZONE</rptOwnerStreet2>
            <rptOwnerCity>TAIAN CITY, SHANDONG PROVIDENC</rptOwnerCity>
            <rptOwnerState>F4</rptOwnerState>
            <rptOwnerZipCode>271000</rptOwnerZipCode>
            <rptOwnerStateDescription>CHINA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6400</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">1. These shares were acquired by the reporting person on November 20, 2008.</footnote>
    </footnotes>

    <remarks>These shares beneficially owned by the reporting person will be reported in the Form 4.  Please discard the Form 3.</remarks>

    <ownerSignature>
        <signatureName>Xin Li, Attorney-in-fact for Sheldon B. Saidman</signatureName>
        <signatureDate>2008-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
