The two sides also agreed to study on signing the Vietnam-Sri Lanka Preferential Trade Agreement (PTA) in the future.In 2011, the Vietnam-Sri Lanka bilateral trade turnover reached 100 million U.S. dollars and is expected to hit one billion U.S. dollars by 2015. (Xinhua) Sri Lankan Foreign Minister G.L. Peiris, for his part, expressed his impression on achievements Vietnam has gained during the innovation and economic development process. Vietnamese Minister of Foreign Affairs Pham Binh Minh met with his Sri Lankan counterpart G.L. Peiris for talks over bilateral relations in capital Hanoi on Tuesday during his four-day visit to Vietnam.During the meeting, Vietnamese Foreign Minister Pham Binh Minh spoke highly of Peiris’s visit to Vietnam, adding that his visit plays an important role in further expanding the Vietnam-Sri Lanka multifaceted traditional friendship relations. The two ministers expressed delight at the positive development of the bilateral relations during the past years and agreed to further cooperation in fields of politic, defense and security, economic, trade and investment, oil, gas, and education.