some ingredients will be discharged. there are three main reasons: one is the filtered precipitate, and the oil fume purifier is during the process of filtering the oil fume. this is the largest particulate matter, which can reach more than 50 microns, mostly oil, dust, etc., accounting for more than 70% of the particulate matter; second, various organic matter adsorbed by activated carbon, including harmful substances such as formaldehyde and benzene, accounting for about 20% of the emissions; third, tiny particulate matter and good pollutants that have not been captured account for about 10% of the emissions.浏览人数：145