Trung Tam Giao Duc Thuong Xuyen Huyen Bac Son Address: Tieu Khu Hoang Van Thu, Bac Son Town, Bac Son District, Lang Son Province Enterprise code: 4900264732 Phone: 0205837364 Bac Son Town, Bac Son District, Lang Son ProvinceFounding date: 26 - 12 - 2007