Simple principle: Take the focused laser beam as the  energy source and weld through the heat generated by bombarding the weldment; the surface of the workpiece is heated through the laser radiation, and then the surface heat diffuses inside through the heat conduction

Applicable for micro parts with micro size or poor weldability: refraction, focusing, and other optical characteristics of laser

Precise and outstanding weld: small diameter of laser beam

Specific molten pool: formed by controlling laser power, wobbling width, frequency, and other parameters

High-quality weld: low heat input, small welding distortion, and free from the effects of electromagnetic fields