Dau Tu Xay Dung Va Thuong Mai An Son Joint Stock Company Address: Khu Tan Hoa, Huu Lung Town, Huu Lung District, Lang Son Province Enterprise code: 4900228533 Phone: 0205825391 Representative: Nguyen Van Hai Adress: Khu Tan Hoa, Huu Lung Town, Huu Lung District, Lang Son Province Huu Lung Town, Huu Lung District, Lang Son ProvinceFounding date: 1 - 10 - 2004