Klx series air filter applicable to air separation, purification of dust, in order to ensure cleanliness requirements system, extending use life. This efficiency air filter to pp, fiberglass, kapok fiber or polyester fiber filter material, to fold into corrugated shape, and within the time frame. With high efficiency, low resistance, good permeability. High reliability, long life and other characteristics. Polyester fiber materials have more resistance, corrosion resistance, water, not easy clean, can use repeatedly pulse.