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  • MK681C


    fabric: soft non-woven cloth
    filter layer: activated carbon

  • MK681N


    fabric: soft non-woven cloth
    filter layer: high efficient melt blown web
    exhalation valve

  • MK681CN


    fabric: soft non-woven cloth
    filter layer: activated carbon
    exhalation valve

  • MK810


    fabric: soft non-woven cloth
    filter layer: high efficient melt blown web
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