Thien Tra LTD Address: Tieu Khu 3, Bac Yen Town, Bac Yen District, Son La Province Enterprise code: 5500295449 Phone: 0212860244 Representative: Dong Thi Lap Adress: Tieu Khu 3, Bac Yen Town, Bac Yen District, Son La Province Bac Yen Town, Bac Yen District, Son La ProvinceFounding date: 25 - 10 - 2007