... whatever it is good choice for student, worker, office worker.A. Products Information Item No. Size Cover packaging Ctn size thickness ... 36cm 2mm Paper B. OEM on plastic cover lever arch file folder 1. cardboard thickness. 1.8mm to 2.5mm 2 ... As a specialized manufacturer supplier and exporter for notebooks in China, we always devote to stationery products, especially notebooks, file folder and clipboard ...