Khai Thac Va Che Bien Khoang San Yb Joint Stock Company Address: Civil Group 18, Yen Binh Town, Yen Binh District, Yen Bai Province Enterprise code: 5200882742 Phone: 0986588585 Representative: Nguyen Trung Dung Adress: No 39, Tran Phu Street, Tan Dan Ward, Viet Tri City, Phu Tho Province Yen Binh Town, Yen Binh District, Yen Bai ProvinceFounding date: 8 - 12 - 2017