Dau Tu Phat Trien Vien Thong TB Joint Stock Company Address: No 65, Gieng Mut Lane, Bach Mai Street, Truong Dinh Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101596170 Phone: 0249361733 Representative: Ngo Huy Dong Adress: Da A Hamlet, Son Dong Commune, Son Tay Town, Ha Noi City Truong Dinh Ward, Hai Ba Trung District, Ha Noi CityFounding date: 14 - 1 - 2005