Dich Vu Va Thuong Mai Duc Kien Joint Stock Company Address: No 30, Hoang Van Thu Street, Khu Iv, Na Sam Town, Van Lang District, Lang Son Province Enterprise code: 4900734018 Phone: 02053881646 Representative: Hoang Thi Le Quyen Adress: Binh Dan Hamlet, Hoi Hoan Commune, Van Lang District, Lang Son Province Na Sam Town, Van Lang District, Lang Son ProvinceFounding date: 8 - 6 - 2012