The contaminated media of the filter element can be purified, reaching the clean state required by our production and life, with a certain cleanliness. Filters are widely used, ranging from industrial production such as iron and steel smelting, electric power production, and ocean purification, etc. to domestic drinking water treatment, domestic garbage utilization, automobile burning filtration, bicycle lubricating oil filtration, etc. Therefore, filters and filters are used in clean technologies in our lives.