Hop Tac Va Phat Trien Truyen Thong NBN Joint Stock Company Address: Zoom 1602, 24T1 Building, Hoang Dao Thuy Street, Trung Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0103065993 Phone: 02462816939 Representative: Nguyen Ba Ngoc Trung Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 8 - 12 - 2008