introduction hardcover book: 1.material:art paper mounting paperboard 2.size:18.5*22.8cm, accept your require 3.CMYK 4.OEM Provide printing service for introduction hardcover book, magazines, catalogues per customers' specific requirements:1 Item name: Hardcover board book.2) Full color printing.3) The cover is 500-2400g paper card back up 157g art paper.4) Printing technique: gold, silver, ...