... .passed iso9001,iso14001 certificat name:dust removing needle punched filter felt.type: 1.normal temperature,medium temperature and high ... ,oilproof and anti-static,glass fiber,special fibre filter material and filter bags.postt-reatmen: singeing,calendering,waterand oilproof,composite ... drink,biological medicine industry and other fields. polyester water repellent,oilproof,anti static non woven cloth