ACC.004/2550 23 March 2007 To: The President The Stock Exchange of Thailand Subject: Invitation of the AGM uploaded on the Company's website Refer to the resolution of the Board of Directors Meeting of Master Ad Public Company Limited No.1/2007 held on February 26, 2007 which has approved the convening of the Annual General Meeting of Shareholders 2007 on the April 20, 2007 at 14.00 hour at the Chao Samphaya room 4thFloor, The Grand Bangkok Hotel, 20 Ratchadapisek 18 Ratchadapisek Road,Huay kwang Bangkok 10310 to consider matters as detailed in the previous notification. The invitation of the Annual General Meeting of Shareholders 2007 and all supporting documents are now uploaded on the Company's website http//: www.masterad.com/Investor Relation for public considerations since March 21, 2007. However, the invitation and its document will be sent to the shareholders whose names appeared in the register of shareholders on April 4, 2007 at 12.00 hour onwards. Please be informed accordingly. Yours sincerely, Master Ad.Plc. Noppadon Tansalarak Director Phiched Maneerattanaporn Director