... speed,no chromatic aberration and trace after welding. Professional Welding Machine for Advertising WordsLaser Cooling MachinePanasonic and Sony,other imported ... word industry,special king-size light path,arbitrary rotation for 360,higher flexible range;4,No protuberant welding spot ... polishing and burnishing,saving working time,graceful and steady for the structure;5,No noise and no pollution6,Option ...