Dau Tu Va Xay Dung Bac Thang Long LTD Address: Mai Chau Hamlet, Dai Mach Commune, Dong Anh District, Ha Noi City Enterprise code: 0101262058 Phone: 0249531401 Dai Mach Commune, Dong Anh District, Ha Noi CityFounding date: 23 - 7 - 2002