Hoang Ha Tay Bac LTD Address: No 73, Khoi 2, Phu Yen Town, Phu Yen District, Son La Province Enterprise code: 5500561161 Phone: 01669429986; 0369429986 Representative: Hoang Hai Ha Phu Yen Town, Phu Yen District, Son La ProvinceFounding date: 18 - 12 - 2017