... ,cute robot High efficiency Diode laser source, high stabilit laser machine for welding:Features: Power of the laser can be djustable LCD ... welding Plastic welding Nonmetallic material processing Burnning & agglomeration Fusion welding Heating Wavelength 810nm, 980nm Output Power 5W, 15W, 30W, 60W, 90W ... Focusing optics 1:1 imaging optics Working distance 50mm Laser machine for welding