Thuong Mai Sach Va Trang Thiet Bi Truong Hoc Lang Son Joint Stock Company Address: No 12, Lane 6, Nguyen Du Street, Khoi 2, Lang Son City, Lang Son Province Enterprise code: 4900779562 Phone: 0967390909 Representative: Nguyen Duc Anh Adress: No 27, Lane 11, Nguyen Du Street, Lang Son City, Lang Son Province Lang Son City, Lang Son ProvinceFounding date: 13 - 1 - 2015