Truong Mam Non Dong Hoang Address: Dong Hoang, Dong Son District, Thanh Hoa Province Enterprise code: 2801411171 Phone: 02373569945 Adress: Dong Son District, Thanh Hoa Province Dong Hoang Commune, Dong Son District, Thanh Hoa ProvinceFounding date: 15 - 7 - 2009