Air purifier HEPA filter

　　The filtering technology of particulate pollutants is mainly HEPA filter. The quality of HEPA filter is uneven. Although some small brand filters have high filtration efficiency, they have large resistance, low energy efficiency ratio, and are easy to block and have a short life. , It is generally recommended to use a deep dust-holding HEPA filter with electrostatic electret. Electrostatic electret technology makes non-woven fibers have positive and negative charges, effectively capturing particulate matter in the air. Many HEPA filters claim to have electrostatic electret technology. However, due to technical reasons, the electret charge of many filters will decay rapidly in a short period of time, resulting in a decrease in filtration efficiency. It is recommended to choose a HEPA filter made of 3M electrostatic electret air filter material, which uses the same electrostatic electret technology as 3M masks to permanently ensure that the electret efficiency does not decay. High efficiency, low resistance and large dust holding capacity are the last word!

　　Focus on applicable area or particulate clean air volume CADR

　　The strength of the air purifier's purification ability is mainly determined by the applicable area and the amount of particulate clean air (CADR: the rate of clean air provided), and the relationship between the two is: applicable area = CADR × 0.1. The purification ability of other pollutants should be combined with the applicable area.

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