which laser welding equipment is best for welding sapphire

is a 2000w portable handheld laser welding machine enough for welding copper150w laser seam welding machine for copperwhat wattage fiber laser welder do i need for high precision weldingcan a 200w gold laser welding machine weld yellow goldwhich qcw laser welding machine is best for aluminum weldingis a 300w scanning laser welding machine enough for welding red copperis a 600w gold laser welding machine enough for welding copper2000 watt portable handheld laser welder for coppercan a 3000w continuous laser welding machine weld stainless steelis a 150w gold laser welding machine good for gold jewelry welding
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