Appointment of Managing Director of STEC

ST.010/2004/0076 December 9, 2004 Subject :Appointment of Managing Director Attention : Directors and Manager of the Stock Exchange of Thailand The Company would report that the Board of Directors Meeting No. 5/2004 of Sino-Thai Engineering & Construction Public Company Limited held on December 8, 2004, resolved to appoint Mr. Vallop Rungkijvorasathien as the Managing Director of the Company. We therefore, inform you of the above for your acknowledgment and dissemination to the public and other investors. Sincerely yours, Sino-Thai Engineering & Construction Plc. (Mr. Woraphant Chontong) Director