Due to the different filtration effects of different filters, the filter levels in fresh air fans are also strictly classified.
At present, our commonly used European standards are generally divided into 17 levels from G1 to U17. Among them, the total purification efficiency of the top-notch U17 level HEPA filter can even reach 99.999997%.
PTFE corrosion-resistant filter membrane has strong hydrophobicity, chemical resistance, waterproofness and low wind resistance, and has high dust removal efficiency. For some extremely small particles with a diameter of 0.1um-0.3um, the filtration level can be Reach H13-U16.
In addition, two-component non-woven fabrics can undoubtedly achieve ultra-low emissions in intercepting various types of dust generated during the production process of enterprises, and are fully in line with current environmental protection standards.
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