Dich Vu Vien Thong Address: Street No 1, Khu A, Nam Thanh Cong, Lang Ha Ward, Dong Da District, Ha Noi City Enterprise code: 0100692876 Phone: 02437730923 Representative: Ho Duc Thang Adress: No 164, Hue Street, Ngo Thi Nham Ward, Hai Ba Trung District, Ha Noi City Lang Ha Ward, Dong Da District, Ha Noi CityFounding date: 14 - 8 - 1998