Trung Tan Vhtt-Tt Huyen Phu Yen Address: Khoi 4, Phu Yen Town, Phu Yen District, Son La Province Enterprise code: 5500357222 Phone: 02123863493 Phu Yen Town, Phu Yen District, Son La ProvinceFounding date: 30 - 3 - 2009