Clarification FS Q1/2005

Ref. No. : A/C ST. 0317 / 2005 9 May 2005 Subject : Clarification of STECON' s financial statement ended 31 March 2005. To : President of the Stock Exchange of Thailand Dear Sirs, We, Sino-Thai Engineering & Construction Public Company Limited, would like to provide the clarification on our quarterly financial statement ended 31 March 2005. Net profit increased 66.69% from the same period of the previous year due to the following reasons: For the first quarter of 2005,the company's revenue from construction increased to Baht 1,861 million equal to 114.75% ,which affected to gross margin increase to Baht 44.14 million. Please kindly be informed. Yours sincerely, ___________________________ (Mr. Woraphant Chontong) Director