There are many types of the pleated mechanical air filter, the HEPA pleated filter is one of them. The HEPA filter is an acronym for high efficiency particular air. The filtration efficiency can reach 99.97%, it can remove most pollen, dust, mold, bacteria and 0.3 microns particulars.

Yitong primary efficiency filters are used for primary filtration of air conditioning and ventilation systems. The filter material is non-woven, which can block particles above 5 microns. It has the advantages of large flow, large dirt holding capacity and small flow resistance. Inexpensive and econ