Khai Thac Che Bien Khoang San Thong Dat Joint Stock Company Address: Buu Dien Thanh Tri Town, Van Dien Town, Van Dien Town, Thanh Tri District, Ha Noi City Enterprise code: 0101297854 Phone: 02436414767 Representative: Tran Trang Nhung Adress: Dai Tu Street, Dai Kim Ward, Thanh Tri District, Ha Noi City Van Dien Town, Thanh Tri District, Ha Noi CityFounding date: 31 - 10 - 2002