Dau Tu Phat Trien Truyen Thong Quang Cao Viet Nam Joint Stock Company Address: No 140, Hoa Bang Street, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0105961219 Phone: 02462873889 Representative: Dinh Xuan Truong Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 3 - 8 - 2012