Dau Tu Khai Thac Khoang San Viet Nam Joint Stock Company Address: No 6, Lane 91/45, Nguyen Chi Thanh Street, Lang Ha Ward, Dong Da District, Ha Noi City Enterprise code: 0101983892 Phone: 0904272766 Representative: Truong Thanh Nam Adress: No 266, Vong Street, Phuong Liet Ward, Thanh Xuan District, Ha Noi City Lang Ha Ward, Dong Da District, Ha Noi CityFounding date: 30 - 6 - 2006