Khai Thac Khoang San Tran Yen LTD Address: No 1, So 7 Civil Group, Co Phuc Town, Tran Yen District, Yen Bai Province Enterprise code: 5200925795 Phone: 02398625630 Representative: Dang Van Hung Co Phuc Town, Tran Yen District, Yen Bai ProvinceFounding date: 29 - 9 - 2021