Ha Hai Address: Khu 4, Na Duong Town, Loc Binh District, Lang Son Province Enterprise code: 4900557979 Phone: 0912263149 Representative: Hoang Van Doan Adress: Khu 4, Na Duong Town, Loc Binh District, Lang Son Province Na Duong Town, Loc Binh District, Lang Son ProvinceFounding date: 14 - 5 - 2010