Vietnam and the European Union signed a free-trade agreement on Sunday, opening opportunities to further boost trade between the euro bloc and one of Southeast Asia’s biggest manufacturing nations.The agreement, which was signed by European Commissioner for Trade Cecilia Malmstrom and Vietnamese Trade Minister Tran Tuan Anh in Hanoi, will eliminate almost all tariffs for goods traded between Vietnam and the EU’s 28 member countries.“It is a special day for relations between the EU and Vietnam…