Tram Khi Tuong Address: Khu V, That Khe Town, Trang Dinh District, Lang Son Province Enterprise code: 4900379500 Phone: 02053883047 Adress: Trang Dinh District, Lang Son Province That Khe Town, Trang Dinh District, Lang Son ProvinceFounding date: 9 - 9 - 2009