Ind.Director & Member of the Audit Committee's Resignation

ST.010/2007/0054 December 11th, 2007 Subject: Independent Director and Member of the Audit Committee's Resignation Attention: The President The Stock Exchange of Thailand According to the letter of Sino-Thai Engineering and Construction Public Company Limited reference number ST.010/2007/0052 dated on December 4th, 2007 RE: Director's Resignation, the Company would like to inform that the Independent Director and a Member of the Audit Committee of the Company - Mr. Chaiyaphon Horrungruang submitted the resignation letter to the Company on December 11th, 2007. In compliance with the regulations of The Stock Exchange of Thailand, the Company would like to report that Mr. Chaiyaphon Horrungruang has resigned from the position of Independent Director and a Member of the Audit Committee of the company, effective from the date that the Company received the resignation letter on December 11th, 2007. Please be advised accordingly. Sincerely Yours, Mr. Woraphant Chontong SEVP. Financial and Administration Division