October 8, 2007 Subject : Signed Sales Contracts To : President of the Stock Exchange of Thailand Tirathai Public Company limited would like to inform that the company have been signed the sales contract for supply and Installation of 300 MVA 230/69 kV.Power Transformers amount 2 Units with the Metropolitan Electricity Authority (MEA) according to the contract No. MP0-8900-BCA Date October 5, 2007 total amount 240,100,000 Baht (Two hundred Forty Million One Hundred Thousand Baht Only) Delivery Date within the quarter 4th 2007. Please be informed accordingly. Your Faithfully, (Mr.Upakrom Thaweephoke) Deputy Managing Director (Finance and Marketing)