File holder 1)paper material ,2,3,4ring binder, 2)custom ... professional work folder,file folder,binders,lever arch file,paper file holder,stationery 1) Size: according to clients' specific ... . 3) Materials: 157g art paper, duplex board with black back, copper plate, art paper, C1S mounted with each other. ... 5*4.5cm for A4 file 2 paper material is 157g art paper and 1200g duplex grey cardboard and ...