Recently, the temperatures in the north have been very low, and indoor ventilation time is very short. I happen to be someone who is very sensitive to smells. The various air purifiers I bought before were not satisfactory. This time, I directly bought a medical-grade one. The professional results are excellent, costing $500, and I have personally tested and give a good review.



If it's for home use and will be turned on for a long time, I recommend choosing plasma + negative ions. Avoid ozone and ultraviolet light.
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