Laser marking machine is mainly used CO2 lasers, the advantages of this laser is: work without cooling equipment, maintenance is simple, power can be used, cheap, long life, high conversion efficiency. Disadvantages are: printing is not good enough, there is a lot of dust, it can not print metallic, print thicker lines when using long focal length when printing plastic tube. Another is to use more fiber lasers, the advantages of this laser is: stable, long life, high efficiency, small print lines. The disadvantage is that expensive.
