Dong Son LTD Address: No 30, Ba Trieu Street, Hoan Kiem District, Ha Noi City Enterprise code: 0100960966 Phone: 02437280805 Representative: Nguyen Duc Nhan Adress: 34 Hang Ngang, Hoan Kiem District, Ha Noi City Hoan Kiem District, Ha Noi CityFounding date: 18 - 1 - 2000