Can the Xiaomi Smart Air Purifier 4 Filter remove formaldehyde?

Not support. The three-layer high-efficiency filtration of the Xiaomi Smart Air Purifier 4 Filter includes PM2.5 and pollen filtration, pet hair filtration and odour elimination. The primary filter provides an initial filtration by filtering dust, hair, fine crumbs among other large particles and is resistant to creases, oil, acids, alkalis and more to ensure a long service life. The 22000cm² high-efficiency filter removes PM2.5, pollen etc. for consistent clean-air output. The 500000mg high-quality activated carbon, with the sophisticated pore structure and evenly distributed carbon, effectively removes air pollutants and odour that are harmful in your home.