Ref: SCG-SET-10-003 March 4th, 2010 President The Stock Exchange of Thailand 62 Ratchadapisek Road, Klongtoei, Bangkok 10110 Re: Amendment of the Invitation Letter for Annual General of Shareholders' Meeting Dear Sir, Regarding our letter no. SCG-SET-10-002 that Sahacogen (Chonburi) Public Company Limited had informed the resolutions of Board of Directors' Meeting No. 1/2010 held on February 26, 2010, we would like to amend some information as follows: The previous one: Whereas the invitation letter and the attached documents shall be delivered to shareholders whose be listed on the shares transfer registration book at the closing date on Monday, April 5, 2010 via registered mail. The revised one: Whereas the invitation letter and the attached documents shall be delivered to shareholders whose be listed on Monday, April 5, 2010 (the Record Date) via registered mail. Please be informed accordingly. Yours sincerely, Viroj Theeravatvatee Managing Director