Xay Dung Va Phat Trien Ha Tang Vien Thong VVN Joint Stock Company Address: No 5/534, De La Thanh Street, Giang Vo Ward, Ba Dinh District, Ha Noi City Enterprise code: 0102000778 Phone: 0903262819 Representative: Nguyen Van Son Adress: Civil Group 5, Cau Dien Town, Tu Liem District, Ha Noi City Giang Vo Ward, Ba Dinh District, Ha Noi CityFounding date: 26 - 7 - 2006