Hop Tac Xa Duong Gia Lang Son Address: My Hoa Hamlet, Nhat Hoa Commune, Bac Son District, Lang Son Province Enterprise code: 4900894117 Phone: 0911660777 Representative: Duong Cong Luong Nhat Hoa Commune, Bac Son District, Lang Son ProvinceFounding date: 17 - 5 - 2023