... : cardboard+art paper 3)Accept OEM 2 Ring Binders 1. 2 Ring Binders1). Size: 258 x 316mm 2). Ring types: O,I ... : 7 days.2). Sample charge: According to clients' requirements.3). Sample refund: Yes.4). Send sample: TNT, UPS, ... , hot stamping, grain embossing, die cutting, and corrugating. 3 . We specialize in producing different file folders, greeting cards ... on. 4 . OEM orders are welcome 2 Ring Binders