Dau Tu Va Xay Dung Thap Hanoi Telecom Joint Stock Company Address: No 46, 121 Thai Ha Lane, Trung Liet Ward, Dong Da District, Ha Noi City Enterprise code: 0107639487 Phone: 02432171089 Representative: Hoang Ta Quang Adress: 69B, Phung Chi Kien Street, Nghia Do Ward, Cau Giay District, Ha Noi City Trung Liet Ward, Dong Da District, Ha Noi CityFounding date: 18 - 11 - 2016