Dau Tu Va Phat Trien Ha Tang Vien Thong Viet Nam Joint Stock Company Address: No 395, Lane 192, Le Trong Tan Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0109748604 Phone: 0928665899 Representative: Nguyen Viet Tu Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 17 - 9 - 2021