Khai Thac Che Bien Khoang San Shiwu LTD Address: No 22, Tieu Khu 6, Phu Yen Town, Phu Yen District, Son La Province Enterprise code: 5500659463 Phone: 0977883309 Representative: Doan Nang Hai Phu Yen Town, Phu Yen District, Son La ProvinceFounding date: 10 - 1 - 2025