1.use fluorescent light to confirm the middle line 2.there is absorb wind to fix the cover paper 3.the material is steel

1. there is a transparent light to project to confirm a middle line

2.there is absorb wind to fix the cover paper . 

3.the cover area: 18inch

4.the thickness of the paper : 0.5-6mm

5.the thickness of the cover spine : 0-6cm

6.t is very convinient machine to make the book cover , menue cover , album cover ,bid documents  cover etc

7.to use fluorescent light and the aborb wind to easy pack the cover

8.the max size of the cover width : 18inch (31*46cm )