Hop Tac Xa Yen Son Address: Yen Son Hamlet, Yen Phu Commune, Van Yen District, Yen Bai Province Enterprise code: 5200281893 Phone: 0216830226 Representative: Nguyen Van Thuan Adress: Yen Son Hamlet, Yen Phu, Van Yen District, Yen Bai Province Yen Phu Commune, Van Yen District, Yen Bai ProvinceFounding date: 19 - 11 - 2007