... D-shaped OEM/ODM:Accepted a5 ring binder with leather Breakthrough traditional style, high quality and fancy printing on ... name card holder, business card holder, cd holder, photo album, ring binder, and offset printing pp OEM products etc. ... SizeA4 /FC or customers' requirementsMaterialEco-friendly PP, PVC, leather PUColor/logo SelectionCustomedRing shapeO-shaped, D-shapedPrintingCustomer's design or ...