paper bag making machine ,double layer ,with 4 colors in line 



video link in youtube :



https://youtu.be/pIVkwrWV_Hg

squaer bottom double layer paper with 6 colors in line :
https://hongyingmachinery.en.made-in-china.com


Square bottom with handle punching in line automatically 

video link as below : 

https://youtu.be/gqJu7rxfdxY