P84 needle felt is made of three-dimensional needles made of P84 fiber (ie, polyurethane fiber) produced by Austrian LENZING company. It has good high temperature resistance, temperature resistance up to 280 °C, and P84 fiber section is irregular. Shape, can greatly improve the filtration effect, the fiber itself has certain resistance to hydrolysis and oxidation. The product has good temperature resistance and good filtration effect, and is widely used in complex conditions such as concrete mixing, cement, garbage incineration, coal-fired boilers, etc. Use under conditions.