1,Optical fiber laser marking(IPG) 2,Min letter 0.2mm/min line 0.01mm 3,Knife/jewelry/ ... accuracy, better durability, etc., able to keep the laser markings' nice appearance and good quality, especially suits ... used in industrial bearings, gears, all kinds of auto parts, hardware tools, aerospace components, integrated circuit chips ... 24hours at your service. high speed auto feeding laser marking machine