... , softcover book; children book, catalog, magazine, paper bag, paper box, calendar, folder, envelope, paper card, poster etc. 3. Free stock samples.4. High quantity ... or custom packing .3. Delivery Time: 15 to 25 days .4. Supply Ability: 300000 Piece/Pieces per Month .5. Size: custom6. Spine ... : 1.5 inch, 2 inch or 3 inch and so on7. Cardboard: grey ...