Khuong Kien Address: Yen Vien Hamlet, Xuan Ai Commune, Van Yen District, Yen Bai Province Enterprise code: 5200820305 Phone: 0967857476 Representative: Vu Duy Khuong Adress: Yen Vien Hamlet, Xuan Ai Commune, Van Yen District, Yen Bai Province Xuan Ai Commune, Van Yen District, Yen Bai ProvinceFounding date: 26 - 5 - 2015