Laser engraving is a process that uses a laser beam to cut, burn, or etch the surface of a material to form artistic patterns, characters, shapes, etc. Laser engraving is the use of lasers to burn or etch the surface of an object, forming the desired patterns or characters. Laser engraving machines are divided into two categories: laser cutting machines and laser engraving machines. Laser cutting machines use laser beams to cut and burn the surface of materials to form the desired shape, while laser engraving machines use laser beams to etch the surface of materials to form the desired patterns or characters. The principle of laser engraving is that when the laser beam is focused on the surface of an object, the laser energy will gather into a point, which will generate huge heat. The heat instantly melts or evaporates the material on the surface of the object, forming the desired pattern or character. The principle of laser engraving is to use the high energy of laser to quickly heat the surface of a substance, forming local evaporation, and thus forming patterns or characters on the surface of the substance.