Phat Trien Dich Vu Vien Thong HDH Viet Nam Joint Stock Company Address: 2nd Floor, No 4/88, Thinh Quang Lane, Tay Son Street, Thinh Quang Ward, Dong Da District, Ha Noi City Enterprise code: 0106009838 Phone: 0888337555 Representative: Pham Vinh Ha Adress: No 4/88, Thinh Quang Lane, Thinh Quang Ward, Dong Da District, Ha Noi City Thinh Quang Ward, Dong Da District, Ha Noi CityFounding date: 11 - 10 - 2012