Vien Thong Ha An Joint Stock Company Address: No 7, 160 Nguyen Khanh Toan Lane, Vien Thong Town, Civil Group 37, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0103985408 Phone: 02438333222 Representative: Nguyen Quoc Anh Adress: Civil Group 37, Quan Hoa Ward, Cau Giay District, Ha Noi City Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 25 - 6 - 2009