... be applied in all kinds of air compressesd station, especially for centrifugal, screw, vane air compressor.1.Cenment2.Metallurgy3.Power Station4. ... material, comppund with advanced folded technology, which makes the air filter with large filter area, small hole diameter, high ... .2.The material for conver and frame is galvanised plate, with perfect anti-corrosion and anti-rusty performance.Dear customer, ...