Xay Dung Thuong Mai Va Dich Vu Khong Gian Xanh LTD Address: No 226, Bac Son Street, Chi Lang Ward, Lang Son City, Lang Son Province Enterprise code: 4900815411 Phone: 0983050054 Representative: Duong Duc Thinh Chi Lang Ward, Lang Son City, Lang Son ProvinceFounding date: 24 - 11 - 2017