Ly Phong Address: Long Hung Hamlet, Long Dong Commune, Bac Son District, Lang Son Province Enterprise code: 4900108652 Phone: 02053837278 Representative: Duong Cong Phong Adress: Long Hung Hamlet, Long Dong Commune, Bac Son District, Lang Son Province Long Dong Commune, Bac Son District, Lang Son ProvinceFounding date: 29 - 10 - 1998