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HEPA Filter Replacement Standards

Medium-efficiency filters are primarily used to filter dust particles from the air, improving air cleanliness.

Maintenance and Repair of Pre-filters

The filter's outer frame is made of sturdy, waterproof board used to secure the folded filter media.

Pre-filters are suitable for primary filtration in air conditioning systems, primarily filtering dust particles larger than 5μm.

Air purifiers mainly consist of a motor, fan, and air filter.

The Development History of Air Filters

Air purifiers are used in residential, medical, and industrial settings.

Air purifiers can be broadly categorized into three types based on their working principle: passive, active, and hybrid (active/passive).

Molecular sieve filters are widely used in chemical, biopharmaceutical, food, and environmental protection industries.

A molecular filter is a technology that filters, separates, and removes impurities. Its main principle is to utilize the membrane pore size and the si

Molecular sieves, as porous materials, possess a uniform microporous structure.