Dau Tu, Khai Thac Tai Nguyen Va Che Bien Khoang San Mien Bac Joint Stock Company Address: No 55, Ngoc Thuy Street, Ngoc Thuy Ward, Long Bien District, Ha Noi City Enterprise code: 0102354914 Phone: 0248716155 Representative: Duong Minh Tien Adress: 113 Hang Gai, Hang Gai Ward, Hoan Kiem District, Ha Noi City Ngoc Thuy Ward, Long Bien District, Ha Noi CityFounding date: 31 - 8 - 2007