Dau Tu Lam San Viet Bac Joint Stock Company Address: Lot CCN3-04, Cong Nghiep Na Duong Cluster, Na Duong Town, Loc Binh District, Lang Son Province Enterprise code: 4900885176 Phone: 02378051969 Representative: Phung Van Hung Na Duong Town, Loc Binh District, Lang Son ProvinceFounding date: 7 - 1 - 2022