Xay Dung Dong Tam Address: Tieu Khu 1, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500207869 Phone: 02123860139 Representative: Nguyen Huu Than Adress: Tieu Khu 1, Bac Yen Town, Bac Yen District, Son La Province Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 24 - 8 - 2002