When air flows through the filter element, it will not be obstructed by the filter element and reduce the air volume. HAF purification efficiency can be improved about 30%-50% using same power purifier.

The hollow structure ensures that the filter can absorb more dust without blocking.The service life is two times that of the traditional filter core

After adsorption of 21 grams，the dust purifier uses the traditional filter due to blockage caused by the air loss is 33 times HAF

Special electrostatic electric technology, effectively adsorb a variety of particles under 10 microns, including division, bacteria, dust and so on.The filtration efficiency can reach 70%.