STEC'S new shares to be traded on May 14, 2013

Additional listed securities Subject : Additional listed shares Company name : SINO-THAI ENGINEERING AND CONSTRUCTION PUBLIC CO.,LTD. (STEC) Old capital (baht) : 1,186,208,619.00 - Common stock (Unit: shares) : 1,186,208,619 Number of additional shares : - Common stock (Unit: shares) : 338,897,921 New capital (baht) : 1,525,106,540.00 - Common stock (Unit: shares) : 1,525,106,540 Par value (baht per share) : 1.00 Allocated for : Stock dividend payment to existing shareholders referred to the record date for determining the eligible shareholders for such dividends payment is fixed on March 14, 2013.The Company shall collect the list of shareholders according to Section 225 of the Securities and Exchange Act by closing its Share Register Book on March 15,2013. Ratio (Old share : Dividend shares) : 3.50 : 1 Trading date : 14-May-2013 ______________________________________________________________________