Truong Mam Non Thi Tran Na Duong Address: Khu Ii, Na Duong Town, Loc Binh District, Lang Son Province Enterprise code: 4900266909 Phone: 0205844779 Representative: Vy Thi Thoa Na Duong Town, Loc Binh District, Lang Son ProvinceFounding date: 14 - 1 - 2008