Xay Dung Hoang Son Lang Son LTD Address: No 26, Lane 26, Duong Xu Nhu, Chi Lang Ward, Lang Son City, Lang Son Province Enterprise code: 4900854403 Phone: 0969518666 Representative: Hoang Van Huu Adress: No 26, Lane 26, Xu Nhu Street, Chi Lang Ward, Lang Son City, Lang Son Province Chi Lang Ward, Lang Son City, Lang Son ProvinceFounding date: 16 - 9 - 2019