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HEPA filters of grade 12 and above have become standard equipment for high-end purifiers

HEPA filters of grade 12 and above have become standard equipment for high-end purifiers

For consumers, there is actually no need to be familiar with the dry regulations of the standards, as long as they know that "the higher the level of HEPA,......

Can the air purifier achieve the nominal purification effect at the factory after replacing the filter?

Can the air purifier achieve the nominal purification effect at the factory after replacing the filter?

The investigation conducted by Hebei Provincial Environmental Protection Institute involves 6 popular brands and 7 models of air purifiers in the market. In add......