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In industrial production, different fields require different filtration efficiency, so different levels of filters need to be selected. Simple classification can be divided into primary efficiency filters, intermediate efficiency filters, and filters. Primary efficiency filters are generally used to filter dust ranging from 3 to 10 microns, medium efficiency filters can filter dust ranging from 1 to 6 microns, and filters can filter particulate matter ranging from 0.3 microns and above. They are typically used in places with high air quality requirements, such as clean rooms, operating rooms, etc.
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