The shape of the product is plate wave type, the filtering efficiency is as high as 99.999%, the filtering accuracy is 0.1 μ m, and the particles are more than 95%. It has the advantages of self lubrication, acid and alkali resistance, easy ash removal, anti condensation, water washing, super wear resistance, no fiber peeling, long service life, and anti-static surface resistance ≤ 8 Ω