Dau Tu Xay Dung Ha Tang Kinh Te - Tran Mai Joint Stock Company Address: Na Hoa Hamlet, Son Ha Commune, Huu Lung District, Lang Son Province Enterprise code: 4900270366 Phone: 02053727241 Representative: Tran Ngoc Ly Adress: Khu Tan My I, Huu Lung Town, Huu Lung District, Lang Son Province Son Ha Commune, Huu Lung District, Lang Son ProvinceFounding date: 22 - 2 - 2008