Operation instructions for customers on the machine: The laser head has a protective point. The protective point is mainly a safety measure to prevent static electricity from burning the laser tube. Our clothes and hair are static electricity, and there is a high-end anti-static performance when using it. The soldering iron can be opened directly. Special attention should be paid to ordinary soldering irons. Turn on the soldering iron first. When the soldering iron reaches a temperature that can melt the tin, remember to unplug the soldering iron and turn on the protection point of the laser head to prevent static electricity from the ordinary soldering iron. Burn out the laser head.