02 July 2003

Report on the Exercise of Warrants No.2/2003

02/07/2003 13:36 STECON : Report on the Exercise of Warrants No.2/2003 Ref: ST/010/2003/0011 July 2, 2003 Re: Report on the Exercise of Warrants No.2/2003 To: The President The Stock Exchange of Thailand Sino-Thai Engineering & Construction Public Company Limited would like to report the exercise of warrants (STECON-W) no.2 on June 30, 2003 As per following details: - Exercising ratio: 1 unit of warrant per 10 ordinary shares - Exercising price: Baht 1 per share - Ordinary shares reserved to support the exercise: 113,803,360 shares - No. of warrant holders exercise: 70 - No. of warrants being exercised: 9,493,251 units - Ordinary shares resulted from the exercise: 94,932,510 shares - Money received from the exercise: Baht 94,932,510 - Total remaining warrants listed in the Stock Exchange of Thailand: 1,887,085 units Please be informed accordingly. Yours sincerely, Mr. Woraphant Chontong (SVP.) Finance & Accounting Division