Dien Tu, May Tinh Va Tu Dong Hoa Son Nam Joint Stock Company Address: No 5, Lane 167, Doi Can Street, Doi Can Ward, Ba Dinh District, Ha Noi City Enterprise code: 0101714057 Phone: 0247221549 Representative: Tran Hong Son Doi Can Ward, Ba Dinh District, Ha Noi CityFounding date: 11 - 7 - 2005