Duc Cong Address: Vinh Thuan, Bac Son Town, Bac Son District, Lang Son Province Enterprise code: 4900225476 Phone: 0205837647 Representative: Nguyen Van Thanh Adress: Vinh Thuan, Bac Son Town, Bac Son District, Lang Son Province Bac Son District, Lang Son ProvinceFounding date: 18 - 2 - 2004