Truong THCS Duc Ninh Dong Address: Diem Bac Hamlet, Duc Ninh Dong, Dong Hoi City, Quang Binh Province Enterprise code: 3100489333 Phone: 02323851499 Adress: Dong Hoi City, Quang Binh Province Duc Ninh Dong Ward, Dong Hoi City, Quang Binh ProvinceFounding date: 20 - 8 - 2009