Laser spot welder: 1.integrative design,easy operation,low ... gold,silver,platinum and other JEWELRY.Especially in repairing,spot stitch,electronic parts,IC,.battery,watch,etc. High reliability ... ,long resistance,high energy exchange,top beam quality,air cooling,low price,easy operation.3 ... Machine Power4KWCooling Machine Power2PCooling ModeAir cooling Laser spot welding machine