I want to know the dust removal effect of the air purifier, which can be observed by the naked eye. Generally, the dust filter effect of the air purifier is its primary effect filter. The primary filter mainly filters large particles such as hair, dust and dust. The filter of HOKO Air Purifier adopts multi-layer progressive composite design, which increases the peak number and peak stiffness and reduces the stiffness. Wind resistance effectively increases the efficiency of filtering large particle contaminants.