Filtration technology for purifiers

Particulate pollutant filtration technology is mainly HEPA filter, HEPA filter quality is uneven, some small brands of filter although have high filtration efficiency, but resistance, energy efficiency ratio is relatively low, and easy to block, short life, generally recommended to choose with electrostatic electret deep dust-holding HEPA filter, electrostatic electret technology makes non-woven fiber with positive and negative electricity, effectively capture particles in the air, many HEPA filters are claimed to have electrostatic electret technology, However, due to technical reasons, the electret charge of many filters will decay quickly in a short period of time, resulting in reduced filtration efficiency.
You can choose the HEPA filter such as 3M electrostatic electret on the market, and use the same electrostatic electret technology as the 3M mask to permanently ensure that the electret efficiency is not attenuated.