Doanh Nghiept U Nhan Thuy Trieu Address: Phieng Ban Ii, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500229911 Phone: 02123505144 Representative: Do Xuan Thuy Adress: Thi Tran, Bac Yen District, Son La Province Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 3 - 6 - 2009