Xay Dung 1979 Address: No 687, Tieu Khu Phieng Ban I, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500421799 Phone: 02123860770 Representative: Phan Mien Trung Adress: Tieu Khu Ii, Bac Yen Town, Bac Yen District, Son La Province Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 6 - 4 - 2011