High Efficiency Filtration - Adopting advanced filtration technology, it can effectively filter dust, particles and other impurities, with a high filtration efficiency of more than 99.9%, ensuring that the discharged air is clean and avoiding secondary pollution. MULTIPLE FILTRATION MATERIALS There is a HEPA filter, which can reach a filtration efficiency of 99.97% for 0.3 micron particles; there is also a PTFE coated filter, which is specially designed to remove clogged dust easily and is easier to separate dust. Motor protection: The filter located in front of the vacuum cleaner motor can effectively intercept hair, particles and other impurities to protect the motor and extend the life of the vacuum cleaner. WASHABLE & LONG LASTING - Part of the filter is made of washable material, easy to clean and long lasting. Strong Applicability: It is suitable for wet and dry vacuum cleaners to meet the needs of cleaning in different scenarios.