what is the best pulsed laser welding machine for welding copper

is a 3000w handheld fiber laser welding machine enough for welding galvanized steelis an open laser welding machine good for vacuum cup weldingis a semi automatic laser welding machine good for welding mild steel200w advertising letter laser welding machine for galvanized steelbuy scanning laser welding machine for copper400w 3 axis laser welding machine for galvanized steellaser welding machine for metal letters3000w continuous automatic laser welding machine for saleportable laser cleaning machine for steeldo i need training to use a metal sign letter laser welding machine
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