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TINTELE 9300 FFP3 NR Particulate Respirator
Dec 24,2020
We have get CE certificate of cup FFP3 NR face mask without valve.
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How surgical masks work
May 18,2020
Most surgical masks are self-priming filter masks, the working principle of which is that the air containing harmful objects is filtered through the filter material of the mask before being inhaled or exhaled by a person.
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Structural composition of surgical mask
May 18,2020
Main filter material: such as polypropylene meltblown cloth, etc.
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