There are 3 kinds of marking machines. They are fiber laser marking machine,co2 laser marking machine and UV laser marking machine. All of the 3 machines has Galvo head and they can mark at very fast speed and high precision.Sometimes,the speed can reach 10000mm/s. They are no touching marking, no harm to the materials. Fiber laser marking machine and UV marking machine can process both metal and nonmetal while co2 laser marking machine works only on nonmetal.-XDLASER