... about 2000hours 4. Material :filter paper of pure wood pulp from USA and KoreaFilter out air compressor inlet of the dust ... .long service life6. Metal net shell, not rust1.Pre air filter manufacturer2.Low initial pressure drop 3.High dust holding capacity4 ... ISO 3968 Company AdvantagesOur company is specialized in producing compressor air filter,Not only can produce domestic product, the more important ...