Dau Tu Va Truyen Thong So Joint Stock Company Address: No 5, N4 Khu Nha O Xuan Dinh, Xuan Tao Ward, Bac Tu Liem District, Ha Noi City Enterprise code: 0105138301 Phone: 02396336888 Representative: Hoang Van Huy Adress: Nha H6, Lane 28, Xuan La Street, Xuan La Ward, Tay Ho District, Ha Noi City Xuan Tao Ward, Bac Tu Liem District, Ha Noi CityFounding date: 25 - 1 - 2011