Mang Vien Thong So Viet Nam LTD Address: No 26, Civil Group 46, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0103251478 Phone: 02437673162 Representative: Le Van Quyet Adress: No 34, Lane 9, Civil Group 8, Dong Ngac Ward, Bac Tu Liem District, Ha Noi City Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 7 - 2 - 2009