Technical data of this car air purifier: 1 Special Ion dust collection. 2 The sterilization rate of photoelectrocatalysis is more than 99.9%. 3 The preposed filter screen can be washed when it absorb much dirt. 4 The negative ion density is more than 1000000 pcs/cm³,the effect of removing the smoke and dust is evident. On the other hand, the solid fragrance in air purifier sends out fragrance. . Function: Efficiently purifies the air in the car without consumption, sterilizes, removes the rare delicacy and formaldehyde, adsorbs the dust.