Laser marking machine is a device that uses a laser beam to permanently mark and engrave on various material surfaces. It has the characteristics of high precision, high speed, and high efficiency, and is widely used in industrial manufacturing, electronics, medical, jewelry and other industries. The working principle of laser marking machine is to use laser beam to evaporate or undergo chemical and physical changes on the surface material, thereby engraving exquisite patterns, logos and texts. It is mainly divided into various types such as CO2 laser marking machine, semiconductor laser marking machine, fiber laser marking machine, and YAG laser marking machine.