which is better 200w or 300w galvo laser welding machine

what wattage portable laser welding machine do i need for gate makingis a portable laser welder good for metal workshopcan a 300w three axis automatic laser welding machine weld aluminum alloydoes a laser paint removal machine remove paint400w laser spot welding machine for zinc plated steelcan a 1500w automatic laser welding machine weld stainless steelcan a 2000w handheld laser welding machine weld red copper1000w continuous automatic fiber laser welding machine for stainless steel sheetcan a 150w mold laser welding machine weld brassbest 2kw semi automatic laser welding machine
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