Xay Dung Dai Thanh Joint Stock Company Address: 45 Ba Trieu, Hoang Van Thu Ward, Lang Son City, Lang Son Province Enterprise code: 4900211498 Phone: 02145870492 Representative: Nguyen Trong Lap Adress: 45 Ba Trieu, Hoang Van Thu, Lang Son City, Lang Son Province Hoang Van Thu Ward, Lang Son City, Lang Son ProvinceFounding date: 7 - 9 - 2001