Cty Co Phan Tin Hoc Lang Son Address: No 1, Lane 1, Tam Thanh Street, Tam Thanh Ward, Lang Son City, Lang Son Province Enterprise code: 4900208671 Phone: 0205710281 Representative: Do Van Muoi Adress: No 32, Khoi 5, Vinh Trai Ward, Lang Son City, Lang Son Province Tam Thanh Ward, Lang Son City, Lang Son ProvinceFounding date: 15 - 6 - 2001