... conference folder 2.Ring Shape:O-Rings ,D-Rings 3.Thickness: 1-3.5mm 4.Cheapest printing plans Brief ... book, catalog, magazine, paper bag, paper box, calendar, folder, envelope, paper card, poster etc. 3. Free stock samples ... and OEM is welcome. Item: New Custom hard cover conference folder 1. Minimum Order Quantity: 500 Piece/Pieces .2. ... around the world. New Custom hard cover conference folder