San Xuat & Thuong Mai Hoang Son Joint Stock Company Address: 306, Tran Khat Chan, Thanh Nhan Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101093681 Phone: 0249716506 Thanh Nhan Ward, Hai Ba Trung District, Ha Noi CityFounding date: 7 - 2 - 2001