Hop Tac Xa Dich Vu Tong Hop Hoang Thang Address: Cua Ngoi Hamlet, Hoang Thang Commune, Van Yen District, Yen Bai Province Enterprise code: 5200191664 Phone: 0216835115 Representative: Mai Xuan Hieu Adress: Hoang Thang Commune, Van Yen District, Yen Bai Province Hoang Thang Commune, Van Yen District, Yen Bai ProvinceFounding date: 2 - 1 - 2002