Ha Son LTD Address: No 74B, Hung Vuong Street, Chi Lang Ward, Lang Son City, Lang Son Province Enterprise code: 4900142276 Phone: 02053255256 Representative: Vu Dinh Hong Adress: No 44, Phai Ve Street, Dong Kinh Ward, Lang Son City, Lang Son Province Chi Lang Ward, Lang Son City, Lang Son ProvinceFounding date: 6 - 1 - 1999