Dau Tu Va Dich Vu Truong An Joint Stock Company Address: No 20 Vu Pham Ham, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0105171806 Phone: 02437481186 Representative: Trinh Thi Tam Quyen Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 2 - 3 - 2011