Xay Dung Ha Tang Vien Thong Viet Nam Joint Stock Company Address: No 207B-A5, Doi Can Street, Lieu Giai Ward, Lieu Giai Ward, Ba Dinh District, Ha Noi City Enterprise code: 0102458864 Phone: 0242885588 Representative: Tran Van Hung Adress: Trach Loi Hamlet, Trach My Loc Commune, Phuc Tho District, Ha Noi City Lieu Giai Ward, Ba Dinh District, Ha Noi CityFounding date: 12 - 11 - 2007