SET-listed Scan Inter Plc (SCN), The compressed natural gas kit distributor and service provider , recently set up two companies in Vietnam in partnership with a local firm to tap CNG demand there and in neighbouring countries. The economies of Cambodia, laos,Myanmar and Vietnam have rapidly grown compared with other in the region. The two ventures are Hanoi Liquefied Petroleum Gas Import-Export and Investment Joint Stock Co. The company projected its profit margin will rise from 10% last year on improved production efficiency and economy of scale.