Tu Van Dau Tu Xay Dung Va Phat Trien Vien Thong Joint Stock Company Address: No 10, Lane 81, Duc Giang Ward, Long Bien District, Ha Noi City Enterprise code: 0101540756 Phone: 0249165224 Representative: Tran Manh Ha Adress: No 10, Lane 81, Duc Giang Ward, Long Bien District, Ha Noi City Duc Giang Ward, Long Bien District, Ha Noi CityFounding date: 15 - 10 - 2004