Vien Thong Nam A Joint Stock Company Address: No 137B Civil Group 16, Hoang Van Thu Ward, Hoang Mai District, Ha Noi City Enterprise code: 0101852152 Phone: 0246241309 Representative: Pham Quang Hung Adress: No 89B Truong Dinh, Truong Dinh Ward, Hoang Mai District, Ha Noi City Hoang Van Thu Ward, Hoang Mai District, Ha Noi CityFounding date: 10 - 1 - 2006