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  Product Name       FACEMASK Product Brand       FIL TECH Mode               FIL TECH F853 Standard            GB2626-2006 Classification        KN95 Filtering Efficiency     ≥ 95% Certificate           GB Intended use         For use in particles prevention ； non medical use. Source:   https://www.unisourcesgroup.com/a/Facemask/KN95/5.html

  Product Name       FACEMASK Product Brand       FIL TECH Mode               FIL TECH F852 Standard            GB2626-2006 Classification        KN95 Filtering Efficiency     ≥ 95% Certificate           GB Intended use         For use in particles prevention ； non medical use. Source:   https://www.unisourcesgroup.com/a/Facemask/KN95/5.html

    Product Name       FACEMASK Product Brand       FIL TECH Mode               FIL TECH F 851 Standard            GB2626-2006 Classification        KN95 Filtering Efficiency     ≥ 95% Certificate           GB Intended use         For use in particles prevention ； non medical use. Source: https://www.unisourcesgroup.com/a/Facemask/KN95/3.html

Product Name       FACEMASK Product Brand       FIL TECH Mode               FIL TECH F 850V Standard            GB2626-2019 Classification        KN95 Filtering Efficiency     ≥ 95% Certificate           GB Intended use         For use in particles prevention ； non medical use. Source: https://www.unisourcesgroup.com/a/Facemask/KN95/3.html