Dau Tu Thuong Mai Lang Son LTD Address: Khu Cua Khau Tan Thanh, Van Lang District, Lang Son Province Enterprise code: 4900627640 Phone: 02053888298 Representative: Chow Chun Wai Adress: Cua Khau Tan Thanh, Van Lang District, Lang Son Province Van Lang District, Lang Son ProvinceFounding date: 22 - 12 - 2010