Quan Son LTD Address: 179, Le Duan Street, Nguyen Du Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101044941 Phone: 0248222434 Representative: Le Thi Ngoc Lan Adress: No 179a Le Duan P.Nguyen Du, Hai Ba Trung District, Ha Noi City Nguyen Du Ward, Hai Ba Trung District, Ha Noi CityFounding date: 17 - 8 - 2000