Thuong Mai Dich Vu Vien Thong Viet Vuong Joint Stock Company Address: No 22B Giang Vo, Cat Linh Ward, Dong Da District, Ha Noi City Enterprise code: 0106843507 Phone: 0137367806 Representative: Dang Hoang Viet Ha Cat Linh Ward, Dong Da District, Ha Noi CityFounding date: 8 - 5 - 2015