State secretary Endre Kardevan negotiated on expanding Hungarian farm exports to Vietnam at a meeting of the Hungarian-Vietnamese Economic Cooperation Mixed Committee in Hanoi, the Rural Development Ministry told MTI on Tuesday. Kardevan and Vietnamese deputy farm minister Diep Kinh Tan signed a declaration that aims to deepen cooperation in the areas of food safety and animal health. They also continued talks on documentation necessary for the export of pork and poultry.