it is suitable for marking on the various metallic and nonmetallic materials,such as electronic components, IC, electronic appliances, mobile phones,hardeware, tools, precision instruments, eye glasses frames, clorks and watchs, motor accessories, plastic buttons, building materials, drug and food packaging, medicial instruments, PVC pipe and so on.laser marking on the plastic or metal surface which processed by coating,plating and oxidation, etc.also can be marking on surface of silica key-press