Cong Nghe Cao Antimon Dong Duong Joint Stock Company Address: Lot 11, Cong Nghiep Na Duong 3 Cluster, Na Duong Commune, Tinh Lang Son, Viet Nam Enterprise code: 4900943935 Phone: 0944642643 Representative: Doan Van Hoan Na Duong Commune, Loc Binh District, Lang Son ProvinceFounding date: 13 - 5 - 2026