... precision, high speed, lower cost, no limit for the engraving area, can engraving whatever plane or bend surface, No noise, No smell ... only less than 1/10 price compare with the laser engraving product, besides, with clearly, enduring, no change color, no fall ... radiator, the hardware, the furniture and family appliance, the front-panel of CD,VCD and DVD, various aluminum hot-spreading slices ...