Uy Ban Mat Tran To Quoc Huyen Trang Dinh Address: Khu I, That Khe Town, Trang Dinh District, Lang Son Province Enterprise code: 4900379557 Phone: 02053883229 Adress: Trang Dinh District, Lang Son Province That Khe Town, Trang Dinh District, Lang Son ProvinceFounding date: 9 - 9 - 2009