High efficiency particulate air filter, or HEPA, can achieve filtration efficiencies of more than 99.97% for 0.1 μm and 0.3 μm. Air can pass through, but fine particles cannot, often in places where there is a high demand for clean air.

The gel-sealed hepa filter has a ring-circumferential U-section liquid tank, its unique liquid tank structure design has better performance than traditional sealing structure. The gel-sealed hepa filter can meet some occasions with extremely high requirements for filter sealing performance, and is an ideal terminal filter for industrial clean rooms and biological clean rooms.