DIRECTOR'S RESIGNATION

Ref. No.ST/010/2003/006 March 7, 2003 Subject : Director's Resignation To: Director and Manager The Stock Exchange of Thailand In compliance with the regulations of The Stock Exchange of Thailand, Sino-Thai Engineering and Construction Public Company Limited would like to report that the board of directors meeting no. 1/2003 held on 4th of March 2003 acknowledged the resignation of one director, Mr. Kierte Eiamsakulrat, effective from February 28, 2003. Please be advised accordingly. Very Truly Yours, Ayuporn Wongkomet Assistant Vice President Investor Relations IR@stecon.co.th