How long does it usually take to learn the sheller?
It usually takes 1 to 3 years to learn the sheller. According to relevant data, it takes 1 to 3 years to learn shell machine skillfully. Cover machine is also called edge wrapping machine and leather shell machine. It is divided into manual sealing machine, semi-automatic sealing machine and full-automatic sealing machine. The whole production process includes covering, positioning and hemming.