Face Mask Filter Pad
5 layer face mask filter, PM2.5
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Best price in the market
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1st layer: Anti-sticking cloth: dust filtering micron
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2nd layer: Activated carbon cloth: effectively filters dust & prevent misy haze
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3rd layer: Activate carbon: Capabilities of filtering automobile exhaust/secondhand smoke
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4th layer: filter capabilities of small density substance
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5th layer: Anti sticking cloth: Final layer of filtration
Note:
Wearing mask for long hours could cause dizziness and somewhat restriction of smooth air flow. Do not wear mask to sleep and when not in crowded environment, take a break and take mask off.
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