Middle hollow spell Books
| Product description | cover | Text |
| size | 160*210MM | |
| paper | 128G copper plate +3MM ash board | A total of 12 250G white developedsurface |
| printing | 4C/0C | 4C/0C |
| surface treatment | Dumb film | Light oil |
| binding | Flat ridge hardcover board book | Mounted on the cutting pieces + local |
| packing | Five layer carton | |
| remarks | A variety of processes can be flexible | |
