sentences:  He attended studies on foreign trade and free trade zones with scholarship of Organisation for Economic Co-operation and Development (OECD), United Nations and British Council in Denmark, Egypt, Singapore and South Korea.He was a specialist and department head and deputy director general at State Planning Organization, Department of the Treasury and Department of Foreign Trade.After serving as director general of the Department of Free-trade Zones, he became deputy undersecretary and then undersecretary of the Department of Foreign trade.