There are four key indicators for purchasing an air purifier: clean air volume (CADR),car air purifier which is the volume of clean air output per unit time, expressed in cubic meters per hour (m³/h). Of course,car air purifier the larger the amount of clean air, the better, but the interior space of the car is only a few cubic meters,car air purifier and the CADR value is more than 50m³/h.
The cumulative purification capacity (CCM) is how many pollutants the filter element filters out when the clean air output of the purifier decays to 50%, expressed in milligrams (mg),car air purifier which is intuitively the life of the filter element. It is recommended to choose CCM particles not lower than P2 for the cumulative purification amount,car air purifier and P3 and P4 are of course better. CCM formaldehyde is better if it is above F2,car air purifier and it is nothing if it is not. Energy efficiency rating, the energy efficiency rating depends on the benevolent,car air purifier and it does not consume much electricity! noise. Basically,car air purifier the car noise of ordinary family cars can basically mask the noise of the purifier.