which is better 2000w or 3000w handheld laser welder

how to use a scanning laser welding machineis a 4000w handheld fiber laser welding machine enough for welding stainless steel sheetcan a portable laser welding machine be used for towel rack weldingis a 400w laser seam welding machine good for seam sealingcan a 400w mold laser welding machine weld tool steel1.5kw fiber laser welding machine for red copper500w jewellery laser welding machine for white goldbest continuous automatic laser welding machine for tube weldingcan a laser seam welding machine be used for brass weldingcan a 500w galvanometer laser welding machine weld sheet metal
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