Thuong Mai Va Dich Vu Vien Thong Van Yen Vuong LTD Address: No 62, Ba Trieu Street, Hang Bai Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0104971006 Phone: 02439449539 Representative: Nguyen Thi Bach Yen Adress: 62 Ba Trieu, Hang Bai Ward, Hoan Kiem District, Ha Noi City Hang Bai Ward, Hoan Kiem District, Ha Noi CityFounding date: 25 - 10 - 2010