Thuong Mai, Dau Tu Va Giao Duc Dong Son Joint Stock Company Address: No 7, Lane 132, Kham Thien Street, Kham Thien Ward, Kham Thien Ward, Dong Da District, Ha Noi City Enterprise code: 0102274793 Phone: 0248518849 Representative: Le Thanh Huy Adress: No 7, Lane 132, Kham Thien Street, Kham Thien Ward, Dong Da District, Ha Noi City Kham Thien Ward, Dong Da District, Ha Noi CityFounding date: 31 - 5 - 2007