14 May 2009 Subject: Clarification Company's Results for 1st Quarter 2009 Attention: Director and Manager of Stock Exchange of Thailand Further to the submission of Financial Statement for the first quarter end 31 March 2009 to SET on 14 March 2009, the net profit of 1st Quarter 2009 was equal to 88.70 million Baht, increased from the same period last year 60.16 million Baht which represent more than 20% change. The company therefore would like to explain the reasons as follows: 1. Total revenue of 671.49 million Baht, increased by 186.9 million Baht or 38.57% increase. This was due to increase in volume of orders received in advance and also well manageable on-time delivery. 2. Gross profit margin was equal to 26.27 % compared to the same period last year 20.04% or representing 31.1% increase as a result of having revenue in line with the budget together with well cost control. 3. Interest expenses of 9.32 million Baht, increased from the same period last year 2.81 million Baht or representing 43.16% increase as a result of increase in short term liabilities due to increase in trade account receivable and inventory. Please be informed accordingly. Yours faithfully Mr. Upakrom Thaweephoke Executive Committee and Company Secretary