CO₂ laser is a kind of gas laser, which mainly uses carbon dioxide gas as the working medium to rush CO₂ and other auxiliary gases into the discharge tube. When high voltage is applied to the electrode, glow discharge will be generated in the discharge tube, so that gas molecules will release laser light, and the laser energy will be amplified for laser marking. The generated wavelength is 10.6 μm。 CO₂ laser has relatively high power and high photoelectric conversion efficiency. At present, it is the laser with the largest power. Our company adopts the original laser imported from the United States and cooperates with the high-speed scanning galvanometer, with high speed, good accuracy and strong stability.