... precision ultra-precision welding;2. Non-contact welding,it can achieve spot welding, joint-meet welding, fold welding and seal welding etc. 3. ... Fast speed, high ratio(5:1) welding depth, small ... 4. level up welding seam, non-polluting, small heat-affected zone 5. Weld high strength, good toughness 6. Laser beam easy ...