A clear hardcover Picture book, if you don't believe me, click it

A clear hardcover Picture book, if you don't believe me, click it

Envelope: Wrapped on envelope paperboard and medium diameter paperboard by envelope fabric

Ring lining: stick to the upper and lower sides of the book block, play a decorative role and connect the book block to the cover. Usually folded in half, the sticky mouth is glued to the side of the spine

Backing paper: A thin piece of paper is glued to the gauze for reinforcement

Gauze: stick to the back of the book block for reinforcement

Blanking cloth: the cloth strips glued to the upper and lower ends of the back of the book block to cover up the binding marks

Bookmark tape: a ribbon glued to the upper end of the back of the book block

https://www.minongpackaging.com/books/exquisite-picture-book.html