Do you really choose an air purifier?
Do you really choose an air purifier? Buy a small mask let many people worry about, buy air purifier is more complex, more let consumers make dizzy . In fact, the current air purifier on the market only two kinds, one is passive air purifier by physical absorption, the other is the price a little expensive, but can be active passive type air purifier directly kill bacteria and viruses in the air. The principle of passive air purifier is relatively simple, the [...]