1.plate not easy fall off 2.air compressor air filter cartridge 3.high efficiency air filter 4.ISO9001 5.response within 24h ... direct manufacturer and saler, competitive price Referance data:1.Offer different precision:5um, 10um, 25um, 50um, 80um, 100um, 160um, 180um ... , 280um...2.low pressure under 1.3Mpa3.different size.4.filter material: SS, fiberglass, filter paper, etc. ...