Uy Ban Mat Tran To Quoc Huyen Phu Yen Address: Khoi 5, Phu Yen Town, Phu Yen District, Son La Province Enterprise code: 5500357208 Phone: 02123863075 Phu Yen Town, Phu Yen District, Son La ProvinceFounding date: 30 - 3 - 2009