Printing in china

as left picture 1-12 The structure of hardcover book
block- book block board-book case:

1. 1-book section 2-end paper
2. 3-book backing lining 4-headband
3. 5-book backing paper 6-book spine
4. 7-paper board 8-overlapping
5. 9-inner book waist 10-Center paper
6. 11-book groove 12-overhangcover edges

as left picture 1-11 The structure of softcover book:
(a)- saddle stitching (b)- wire-stitching
(c)- sewing (d)- perfect binding
block- book block board-book case:

1. 1- book section 2- book page
2. 3- book cover 4- gutter
3. 5- sew
4. 6, 7- glue