... Veritas 2. Printing service for paper binder, hardcover, softcover book; children book, catalog, magazine, paper bag, paper box, calendar, folder, envelope ... Heidelberg etc.7. Customized require and OEM is welcome. Item: 2013 new style 3 rings paper file folder 1. Minimum Order Quantity ... , 2 inch or 3 inch and so on7. Cardboard: grey board, thickness: 1.6 mm / 2 mm/2.5mm/3mm8. Cover ...