Bangkok--21 Dec--SET The Stock Exchange of Thailand (SET) has noted that there have been extraordinary increase in price and trading value of warrant of BLISS-TEL PCL."BLISS-W1" under high speculation during 17 to 20 Dec, 2007 compare to previous period. To prevent such negative repercussions, member firms of the SET are hereby prohibited from providing both net settlement trading and margin loans trading for the company's securities. This prohibition shall be effective during 21 Dec, 2007 to 5 Feb, 2008.