Chairman of the Board's Resignation

ST.010/2008/0047 December 3rd, 2008 Subject : Report on Resolution of Board of Directors Meeting No.4/2008, RE: Chairman of the Board's Resignation To: The President The Stock Exchange of Thailand In compliance with the regulations of The Stock Exchange of Thailand, Sino-Thai Engineering and Construction Public Company Limited ("the company") would like to report on Resolution of Board of Directors Meeting No.4/2008 that convened on December 3rd, 2008 as follows: 1. Acknowledgement that Mrs. Tassanee Charnvirakul has resigned from the position of Director and Chairman of the Board of Directors of the company, the letter of resignation dated on November 21st, 2008 and effective from November 21st, 2008. 2. Approval of the transformation of the Directors authorized to sign on behalf of the company in accordance with the transformation of the Company's Directors as follows: "Mr. Vallop Rungkijvorasathien, President to sign and affix the company's seal or Mr. Masthawin Charnvirakul, Mr. Woraphant Chontong, Mrs. Sanongnuch Charnvirakul, Director two in three to jointly affix their signatures and to affix the company's seal." Please be informed that after the transformation of the Directors authorized to sign on behalf of the company and the transformation of the Company's Directors had been made, the company shall promptly send it for being your acknowledgement. Please be informed accordingly. Yours sincerely, Mr. Woraphant Chontong SEVP. Financial and Administration Division Company Secretary Office Telephone: 0 2260 1321 ext. 212, 305, 274 Facsimile: 0 2259 4427