A high-efficiency filter (HEPA filter) for vacuum cleaners is a filter device that captures fine particles and is widely used in household and commercial vacuum cleaners. The full name of HEPA filter is "High-Efficiency Particulate Air", which can effectively remove more than 99.97% of tiny particles in the air, with a diameter as small as 0.3 microns. This filter is very effective at capturing allergens, dust, pollen, mold spores, pet dander and other harmful substances.

Features of high efficiency filter:

1. High capture efficiency: It has extremely high capture ability for harmful substances such as fine particles, dust, pollen and so on.
2. Suitable for a variety of environments: not only suitable for home use, but also suitable for hospitals, laboratories, factories and other places with high air quality requirements.
3. Replaceable design: Most HEPA filters used in vacuum cleaners are replaceable, ensuring that the filtration effect of the vacuum cleaner remains optimal for a long time.
4. Various materials: Commonly used materials include glass fiber, paper or polymer fiber, etc., which have high filtration efficiency and durability.

This high-efficiency filter can significantly improve indoor air quality and is one of the key components to ensure a clean home and work environment.