Phong Thong Ke Huyen Huu Lung Address: Khu An Ninh, Huu Lung Town, Huu Lung District, Lang Son Province Enterprise code: 4900364783 Phone: 02053825108 Adress: Huu Lung District, Lang Son Province Huu Lung Town, Huu Lung District, Lang Son ProvinceFounding date: 11 - 8 - 2009