... working temperature150Acid-proof, alkali proofgood Company introdution Yancheng Boing Filter Co., Ltd. has 20 years' history, covering an ... China. We can provide all the kinds of filter material for air filtration.x such as PPS, PTFE, P84, nomex , ... acrylic, polyester, fiberglass needle felt or other compounded needle felt as per requirement. some filter ...