1.Paper board office folder 2.Ring Shape:O-Rings ,D-Rings 3.Thickness: ... ; children book, catalog, magazine, paper bag, paper box, calendar, folder, envelope, paper card, poster etc. 3. Free stock samples.4 ... . Customized require and OEM is welcome. Item: Paper board office folder 1. Minimum Order Quantity: 500 Piece/Pieces .2. Package: ... etc. Our customer are around the world. Paper board office folder