Halt Trading of ADVANC The Stock Exchange of Thailand (SET) has ordered the trading halt of ADVANCED INFO SERVICE Pcl. (the "Company") because the company has requested that the SET temporarily halt trading in the securities from 4:15 P.M. of February 19,2004 as there has been significant information related to operational result for the year 2003. Therefore, the SET has temporarily halted trading of the Company's securities,effective from 4:15 P.M. of February 19,2004 until the Company has clarified or disclosed this material information to the SET.