DUBAI-Qatar's state-run Qatar­gas says it has agreed to sell 1.5 mil­lion tons of liq­ue­fied nat­ur­al gas an­nu­al­ly to Malaysia, lock­ing in its first ma­jor cus­tomer in South­east Asia.The com­pa­ny says it signed a pre­lim­i­nary agree­ment with Malaysia's Petronas LNG on Sun­day in the Qatari cap­i­tal, Do­ha.The sup­ply deal is ex­pect­ed to start in 2013 and last for two decades. Fi­nan­cial terms weren't dis­closed.