REVIEWED F/S AND BUSINESS OPERATIONS' EXPLANATION FOR Q1

1600 / 055 / 2002 May 15 , 2002 The Stock Exchange of Thailand 62, Ratchadapisek Road, Klongtoey Bangkok 10110 Attention : President of The Stock Exchange of Thailand Subject : Filing Reviewed Financial Statements and Business Operations' Explanation for Quarter 1, 2002 Attachment : 1. Reviewed Financial Statements for Quarter 1 (Thai 1 Copy) 2. Reviewed Financial Statements for Quarter 1 (English 1 Copy) According to the SET's Regulation Re: Preparation and Submission of Financial Statements, Financial Reports and Operating Results of Listed Companies, 2001, a listed company shall prepare and submit quarterly financial statements audited by the Auditor within 45 days since the last day of each quarter. The Bangchak Petroleum Public Company Limited (BCP) would like to file reviewed financial statements by the Auditor for quarter 1 ending March 31, 2002 and also would like to explain reasons for the variation in business operations in accordance with the profit and loss account more than 20 percent from that of the same period of 2001 as followed : Regarding the 1st quarter's business operations in 2002, the Company's total revenues are BHT. 11,469 million. The net profit is BHT. 307 million, higher than that of the same quarter in 2001 BHT 1,217 million (the 2001 first quarter's net loss is BHT. 910 million) which consists of an increase in the gross profit as high as BHT. 1,077 million. This is derived from business synergy with other refineries as to reduce crude transportation cost and to delivered BCP's long residue for cracking into clean oil products, which have more value-added. Besides, the Company gains profit from oil price increasing- 5 $/BBL from the price level in late 2001. The Company is also able to reduce 16% in production cost in quarter 1 comparing to the same period of the preceding year. Furthermore, the Company gains from foreign exchange fluctuations totaling BHT. 19 million, which is higher than that of the preceding year BHT. 140 million. This leads to increasing total profit for quarter 1, 2002. Please be informed accordingly. Yours sincerely (Mr. Chokchai Atsawarangsalit) Corporate Planning Manager (Acting) Corporate Planning Office Tel: 0-2335-4583