Vien Thong Thang Long Joint Stock Company Address: La Duong, Duong Noi Ward, Ha Dong District, Ha Noi City Enterprise code: 0500447117 Phone: 02433845225 Representative: Au Thien Huong Adress: No 14, Le Dai Hanh Street, Le Dai Hanh Ward, Hai Ba Trung District, Ha Noi City Duong Noi Ward, Ha Dong District, Ha Noi CityFounding date: 5 - 4 - 2004