Nice quality ,stitching exercise books. 1.exercise book,spiral note book 2.PVC , soft, hard cover 3.customized size,logo Exercise book / Note book hard cover notebook, spiral notebook, exercise book 1) cover materialuse PVC,leather,paperboard for cover, client's other demand is ok 2) inner pagewoodfree paper for inner pages(60gsm,80gsm,90gsm,100gsm) 3) other details 20 sheets, 40sheets,60sheets, ...