AboutHEPA filters, different countries or regions have its different classifications according to their standards. Similarly, the requirements for cleanliness vary from industry to industry.
HEPA Filters’ features :
According to European standards, Primary filter is divided into 3 levels,G1,G2,G3; Medium filter is divided into 3 levels,G4,F5,F6; High-medium filter is divided into 2 levels,F7,F8; Sub-hepa filter is divided into 3 levels, F9,H10,H11; Hepa filter is divided into 3 levels, H12,H13,H14.
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