Thuong Mai Va Dich Vu Hoang Son LTD Address: No 248a An Duong, Yen Phu Ward, Tay Ho District, Ha Noi City Enterprise code: 0101373801 Phone: 0247166338 Yen Phu Ward, Tay Ho District, Ha Noi CityFounding date: 13 - 6 - 2003