what is a semi automatic laser welding machine

can a 3000w handheld laser welding machine weld aluminum alloy2000 watt continuous laser welding machine for red copperbest portable laser welding machine for railing weldingprecision continuous automatic fiber laser welding machineis a 400w jewellery laser welding machine enough for welding brassdoes a portable fiber laser welding machine work on mild steel500w scanning laser welding machine for galvanized steelis a fiber transmission laser welding machine good for surgical instrument weldingwhich is better 1500w or 2000w laser welding systemdoes a fiber laser welding machine work on gold
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