... 200w 5 CE Pulsed Laser Spot Welding Machine 100w 150w 200w 1 Pulsed Laser Spot Welding Machine 2 Master unit ... used in the laser pump chamber is imported, which is corrosion resistant, high temperature resistant, high electrical/optical conversion. ... principlesAdvantagesFast, efficient, deep, little distortion, little affect area, quality welding, welding points free from pollution, and energy saving ...