Vien Thong Phia Bac Joint Stock Company Address: P1605 Nha 17T8, Trung Hoa Urban Area, Nhan Chinh, Thanh Xuan District, Ha Noi City Enterprise code: 0102011716 Phone: 0242662301 Representative: Tran Huu Manh Adress: No 1 Civil Group 10, Bo De Ward, Long Bien District, Ha Noi City Nhan Chinh Ward, Thanh Xuan District, Ha Noi CityFounding date: 17 - 8 - 2006