... copper, iron , aluminum ,alloy , plastic and other metal and non-metal parts of the flat plate and cylindrical workpiece marking ... motorcycle parts, machinery and equipment , flanges , electrical equipment , metal pipe fittings and other fields, Large trucks, mini trucks , ... bound0.2-0.7mpacontentNumbers or letters and symbols, and shapes the characters used formarking speed1-180c/smarking field90*110mm ...