??[Antivirus] section nasal mask

??????????????????????????????????????????? With 2 special filter

????????????????????????????????????? Fumes， paint， dust， odor

???????????????????????? For the environment: formaldehyde， pesticides， chemicals， gas

????????????????????????????????????? And complex operating environment .......

????????????????????? Features: simple， convenient， breathable， high cost

????????????????????????????????????? No Kazakh gas， not cover people for long-term use

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