Dau Tu Va Phat Trien Nui Ngoc LTD Address: No 101, Muoi Street, Tam Thanh Ward, Lang Son City, Lang Son Province Enterprise code: 4900807234 Phone: 0912374388 Representative: Pham Van Chien Tam Thanh Ward, Lang Son City, Lang Son ProvinceFounding date: 4 - 4 - 2017