The handheld laser welding machine is the preferred model in the metal material welding andprocessing industry.The machine can weld all kinds of metal. The welding seam is beautiful and firm,and the operation is simple, fast, flexible and low in processing cost.Fiber laser welding machine is to couple the laser beam to the optical fiber, after long-distancetransmission, and then convert it into parallel light through collimating mirror, and finally focus onwelding on the work-piece.The non-contact method is adopted for the difficult parts of the optical fiber laser welding machine,and the welding mode is more flexible. Laser beam achieves the separation of time and energy, and multi-beam processing makes welding more accurate.