Thuong Mai, Tu Van & Dich Vu Vien Thong LTD Address: 37, Nguyen Du Street, Bui Thi Xuan Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101050818 Phone: 0248258437 Bui Thi Xuan Ward, Hai Ba Trung District, Ha Noi CityFounding date: 12 - 9 - 2000