资
质
齐
全
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Page 3: ...er To filter industrial pollutants automobile exhaust second hand smoke pollen allergies 3rd Layer Activated carbon cloth benzene and a smaller function of filtering dust microns 4th Layer Filter dens...
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Page 8: ...he upper headband over the top of your head and place it over your ears and pull the lower headband over your head and place it under your ear 4 Place your fingers in the middle of the metal nose clip...
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Page 13: ...OUR CERTIFICATE...
