Chi Nhanh Cong Ty TNHH Hoang Son Address: 97 Trieu Viet Vuong, Bui Thi Xuan Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0100386999-002 Phone: 0249344407 Bui Thi Xuan Ward, Hai Ba Trung District, Ha Noi CityFounding date: 23 - 6 - 1999