... : 0°C to 45°C. 9, cooling system: automatic circulating water-cooling system; 10, motherboard:metal honeycomb (or install reamer ... the internationally advanced 64 digits, high speed DSO for control system of the laser engraving and cutting machine, the processing capability ... Automatic protection there's automatic smoke or dust-ejecting system,water cooling system, if there' s no water or the water ...