Vien Thong HTC Joint Stock Company Address: No 35 Civil Group 4, 10 Lang Ha Lane, Thanh Cong Ward, Ba Dinh District, Ha Noi City Enterprise code: 0101482896 Phone: 0913078752 Representative: Ho Anh Thang Adress: No 47C Civil Group 20, Nga Tu So Ward, Dong Da District, Ha Noi City Thanh Cong Ward, Ba Dinh District, Ha Noi CityFounding date: 14 - 5 - 2004