prefilter

A pre-filter is used for the first stage of dust filtration and for air conditioner program filtration. It features a large particulate filtration area, low initial resistance, high airflow, a large dust containment capacity, and is either disposable or replaceable. As a first-stage treatment filter, it is used for pre-treatments such as HEPA, medium, and more. It removes harmful fine particles (10–30 m) such as industrial airborne matter and airborne dust and has a high efficiency of more than 80%.