... vacuum water,acud,oil,alkali 3)Dust collection of up to 99.8% Technical Specification(Vacuum Suction Machine Art no.:FL-1020CN ... can be vacuum water, acide, oil, alkali, corrosion resistance, resistance to impact, the filtering area of 3600 square meters, dust collection ... of up to 99.8%, applicable to all types of large workshop, commercial office buiding,and ...