Dau Tu Phat Trien Khai Thac Khoang San Ha Long Joint Stock Company Address: No 1, Bai Tu Long Street, Cam Trung Ward, Cam Pha City, Quang Ninh Province Enterprise code: 5700820127 Phone: 0203235102 Representative: Tran Dinh Hai Adress: No 28, Phong Chau Ii Street, Doan Ket Ward, Muong Te District, Lai Chau Province Cam Trung Ward, Cam Pha City, Quang Ninh ProvinceFounding date: 28 - 4 - 2008