ACC.003/06 4 April 2006 President The Stock Exchange of Thailand 62 Rachadapisek Klongtoey Bangkok 10110 Subject: To inform changing place for the Annual General Meeting on April 20,2006 We, Master Ad Public Company Limited, would like to inform the changing of the meeting room for Annual General Meeting for the year 2006 held on 20 April 2006 at 14.00 P.M. will be change from conference room of Master Ad public Co.,Ltd to The Emerald Hotel Ballroom II 3rd Floor 99/1 Ratchadaphisek Rd , Din Dang, Bangkok 10320 Please be kindly informed accordingly Yours sincerely, Noppadon Tansalarak Director Phiched Maneerattanaporn Director