Fiber laser marking machine uses laser beam to mark the surface of various materials permanently. The effect of marking is to expose the deep material through the evaporation of the surface material, or to carve out traces through the physical change of the surface material caused by light energy, or to burn part of the material through light energy to show the required etching pattern, text, barcode and other graphics. It is mainly composed of three parts: laser, galvanometer lens and marking card. The laser marking machine produced by fiber laser has good beam quality, its output center is 1064nm, and the life of the whole machine is about 100,000 hours. Compared with other types of laser markers, it has a longer life, and the electro-optical conversion efficiency is more than 28%. Compared with the conversion efficiency of 2%-10% of other types of laser marking machines, it has a great advantage in energy saving and environmental protection. It is widely used in integrated circuit chips, computer accessories, industrial bearings, clocks and watches, electronic and communication products, aerospace devices, various auto parts, home appliances, hardware tools, molds, wires and cables, food packaging, jewelry, tobacco and military affairs, etc. Many fields such as graphic and text marking, as well as mass production line operations.