Chi Nhanh Bac Son - Cong Ty Co Phan Dao Tao Mua Ban Truc Tuyen Address: No 5 Khu Minh Khai, Bac Son Town, Bac Son District, Lang Son Province Enterprise code: 0105328486-041 Phone: 0948018666 Representative: Le Thi Thang Adress: No 58, Tran Phu Street, Bac Son Town, Bac Son District, Lang Son Province Bac Son Town, Bac Son District, Lang Son ProvinceFounding date: 10 - 2 - 2012