1.high efficiency 2.high precision 3.wide application Specifications1.filter ... can increase filter area by times.2.with high precision efficiency for 99.99% ,it can remove super-fine ... in all kinds of air compressesd station, especially for centrifugal, screw, vane air compressor.1.Cenment2. ... filter area, small hole diameter, high efficiency, etc.2.The material for conver and frame is galvanised plate, ...