Truong Trung Hoc Co So Na Sam Address: Khu Don Dien, Tan Lang Commune, Van Lang District, Lang Son Province Enterprise code: 4900225557 Phone: 0205880289 Representative: Luu Kao Chu Adress: Na Cuom, Tan Lang, Van Lang District, Lang Son Province Tan Lang Commune, Van Lang District, Lang Son ProvinceFounding date: 23 - 2 - 2004