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