... Air cooling 4.USD96000/Set 1)FeaturesCY-JX laser spot welding machine adopt Nd:YAG,laser supplier,cooling system and control ... etc. High reliability,long resistance,high energy exchange,top beam quality,air cooling,low price,easy operation.3)Tech ... selective)Working Voltage220V/mono-phase/50Hz/60AMain Machine Power4KWCooling Machine Power2PCooling ModeAir cooling laser spot welding machine with price