Thanh Hau Bac Son Address: Tieu Khu Vinh Thuan, Bac Son Town, Bac Son District, Lang Son Province Enterprise code: 4900777815 Phone: 0967128855 Representative: Trinh Thi Hau Adress: Tieu Khu Vinh Thuan, Bac Son Town, Bac Son District, Lang Son Province Bac Son Town, Bac Son District, Lang Son ProvinceFounding date: 2 - 12 - 2014