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CRP DS series welding machine adopts high-performance all-digital processor to realize three-level soft-switching technology, the frequency is up to 100KHz welding power supply, MAG/CO? can realize ultra-low spatter welding, and the wide range of the current section cover, 200A welding conditions under the amount of spatter is still getting very good control effect, 500A pulse welder temporary loading rate of 100%, 350A and 500A comes with a short-arc pulse to make the short arc pulse of 350A and 500A makes the weld seam more beautifully shaped. At the same time, SL is a cold metal transition welder with lower spatter and more stable arc.