Use of non-woven polyester non-woven filter needle felt needling process, and after heat setting and other treatment methods are made, the gap is high, dust, high efficiency, long life, because of its high temperature level is moderate, the maximum up to 150 ℃, acid and alkalinity is moderate and has a very good abrasion resistance, polyester needle felt filter media permeability, after heat treatment, surface smooth, not easily deformed and easy cleaning. Hydrophobic oleophobic treated polyester needle felt filter because of its hydrophobic properties, used in high moisture content or contain a small amount of oil smoke, you can prevent the paste bags and prolong life. Widely used in industrial catching dust, dust control and so on.