Du Hoc Thang Long LTD Address: No 48, Bong Lau Street, Hoang Van Thu Ward, Lang Son City, Lang Son Province Enterprise code: 4900891412 Phone: 0914506366 Representative: Pham Thuy Hai Adress: No 48, Bong Lau 1 Street, Hoang Van Thu Ward, Lang Son City, Lang Son Province Hoang Van Thu Ward, Lang Son City, Lang Son ProvinceFounding date: 14 - 12 - 2022