Vien Thong Bao Toan Hac LTD Address: No 33, Lane 87, Yen Duyen Street, Yen So Ward, Hoang Mai District, Ha Noi City Enterprise code: 0108031268 Phone: 0868613111 Representative: Hoang Van Cham Yen So Ward, Hoang Mai District, Ha Noi CityFounding date: 20 - 10 - 2017