Xay Dung, Thuong Mai Va Phat Trien Vien Thong Joint Stock Company Address: No 10, 43 Nguyen Ngoc Nai Lane, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0101643367 Phone: 0249175339 Representative: Nguyen Thi Hong Trang Adress: Khu 1, Thanh Binh Ward, Hai Duong City, Hai Duong Province Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 8 - 2 - 2006