1)Cooling system individual independence 2)vacuum water,acud,oil,alkali 3)Dust collection ... can be used continuously for a ling time, can be vacuum water, acide, oil, alkali, corrosion resistance, resistance to ... type of cleaning industry, random attachment. Technical Specification(Vacuum Suction Machine Art no.:FL-1245CN-DT) Function Wet and ... 50.5*49*85.5 Wet&dry vacuum suction machine 45L