... long-fibre as filter material, it can increase filter area by times.2.with high precision efficiency for 99.99% , ... be applied in all kinds of air compressesd station, especially for centrifugal, screw, vane air compressor.1.Cenment2.Metallurgy3.Power Station4.Food ... filter material, comppund with advanced folded technology, which makes the air filter with large filter area, small hole diameter, high ...