Subject : Explanation of the change in Operating result compared with the same quarter of the previous year greater than 20% To : President of the Stock Exchange of Thailand CC : Secretary-General of the Securities and Exchange Commission As Tirathai Public Company Limited summit the Q3/2006 Financial Statement ended September 30,2006 show the Net Profit 35.35 million Baht which increase 22.44 million Baht or 174% Compared with the same period in 2005 greater than 20%. The main reasons are as followed. 1.Total revenue 411.92 million Baht increase 201.55 million Baht or 95.82% which Gross margin at 22.55% 2.Selling and Administrative expense 42.33 million Baht increase 6.84 million Bath or 19.27%. The Selling and Administrative expense compare to Revenue equal to 10.28% decrease from the same period in 2005 which equal to 16.87% because Selling and Administrative expense are mainly fix expense and the company can deliver all goods according to the schedule, the revenue in Q3/2006 is growth as per the projection. Please be informed accordingly. Yours Faithfully, (Mr.Upakrom Thaweephoke) Deputy Managing Director (Finance and Marketing)