SET Announcements

- TRANSLATION - No. 1000 / 133 / 2007 July 6, 2007 Subject : Result of the Tenth Voluntary Conversion of Depository Receipt for Common Shares of The Bangchak Petroleum Public Company Limited (BCP-DR1) on July 5, 2007 Attention : President of The Stock Exchange of Thailand Reference : Terms and Conditions of the Depository Receipt for Common Shares of the Bangchak Petroleum Public Company Limited According to the Terms and conditions of Depository Receipt for Common Shares of The Bangchak Petroleum Public Company Limited (BCP-DR1) with respect to the rights of Voluntary Conversion, the BCP-DR1 Holders have the right to wholly or partly convert BCP-DR1 to Common Shares. The Voluntary conversion may be made on quarterly basis on the 5th day of January, April, July, and October each year, of which, the Tenth Voluntary Conversion date is July 5, 2007. In addition, the BCP-DR1 holders have to notify the intention for the Tenth Voluntary Conversion during June 28 - July 4, 2007 via Bualuang Securities Public Company Limited, the Agent of the Company for Accepting Exercise of the Conversion of BCP-DR1. The Company would like to inform that on July 5, 2007, there was 1 BCP-DR1 Holder converted their Depository Receipt to Common Shares of BCP. Therefore, the Company's the Depository Receipts will be decreased from 520,056,055 units to 519,906,055 units. Please be informed accordingly. Yours sincerely, -signed- (Wattana Opanonamata) Senior Executive Vice President Corporate Administration and Information Technology Corporate Planning and Investor Relation Office Tel : 0-2335-4583 CC: 1. Managing Director, Siam DR Co., Ltd. 2. Managing Director, Thailand Securities Depository Co, Ltd. 3. Managing Director, Bualuang Securities Public Company Limited