-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Ojq/mRc37CgNcD0ZblwXgBupKRGK+gaCaOzpXJ3+y74FVlMM/1QXm93CrJgd83n2
 seJc1mLopotvWKw5f7/C9Q==

<SEC-DOCUMENT>0001209191-08-031704.txt : 20080520
<SEC-HEADER>0001209191-08-031704.hdr.sgml : 20080520
<ACCEPTANCE-DATETIME>20080520144029
ACCESSION NUMBER:		0001209191-08-031704
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080516
FILED AS OF DATE:		20080520
DATE AS OF CHANGE:		20080520

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRIO TECH INTERNATIONAL
		CENTRAL INDEX KEY:			0000732026
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				952086631
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0625

	BUSINESS ADDRESS:	
		STREET 1:		16139 WYANDOTTE ST.
		CITY:			VAN NUYS
		STATE:			CA
		ZIP:			91406
		BUSINESS PHONE:		818-787-7000

	MAIL ADDRESS:	
		STREET 1:		16139 WYANDOTTE ST.
		CITY:			VAN NUYS
		STATE:			CA
		ZIP:			91406

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HOROWITZ RICHARD M
		CENTRAL INDEX KEY:			0001247606

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14523
		FILM NUMBER:		08848263

	MAIL ADDRESS:	
		STREET 1:		9301 WILSHIRE BOULEVARD #206
		CITY:			BEVERLY HILLS
		STATE:			CA
		ZIP:			90210
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000732026</issuerCik>
        <issuerName>TRIO TECH INTERNATIONAL</issuerName>
        <issuerTradingSymbol>TRT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001247606</rptOwnerCik>
            <rptOwnerName>HOROWITZ RICHARD M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>9301 WILSHIRE BOULEVARD #615</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BEVERLY HILLS</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90210</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>TRT Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.20</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>219300</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Since the date of the reporting person's last report, the 4,600 shares of Common Stock previously reported as indirectly held in an IRA account for the reporting person's spouse were transferred into the Trust noted herein.  Such transfer did not result in any change to the reporting person's pecuniary interest in such shares.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Richard Horowitz</signatureName>
        <signatureDate>2008-05-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----