- Ultra-efficient filtration is at least 90 times higher than ordinary air conditioner nylon filters*
- Specially designed for allergy and asthma sufferers: 97% high-efficiency filtration of PM2.5*
- Specially designed for virus and bacteria filtration: Effectively filters 95% of the COVID-19 virus and up to 97% of the H1N1 virus*
- New upgraded material imported from the USA

*Proven by the ASHRAE 52.2 test method of the American Society of Heating, Refrigerating and Air-Conditioning Engineers, the filtration performance of 3M™ electrostatic filters is 90 times higher than that of original air conditioner nylon dust filters.
*Proven by the GB/T 18801-2008 test method, in a 30 cubic meter space, after installing 3M™ electrostatic filters on a designated air conditioner and running it at high speed for 2 hours, it can filter 97% of PM2.5 suspended particles in the air.
*According to the test results from MRI Global Laboratory, the single-pass filtration efficiency for SARS-CoV-2 was used to simulate that the Midea KFR-35GW air conditioner model can capture 95% of airborne particles containing the SARS-CoV-2 coronavirus after running at high speed for one hour in a 30 cubic meter space; the influenza virus (H1N1) was tested by the Guangzhou Institute of Microbiology. The 3M electrostatic air filter can efficiently filter the H1N1 influenza virus, with an average hourly removal rate meeting the above standards.