N95 valved particular face mask respirator 1. Mateial : PP 2..available :non valved,active carbon particular model N95 valved particular face mask respirator 1. Mateial : polypropylene2..available :non valved,active carbon particular model 3. with adjustable elastic strap 4. leval:N955. the filter layer is made of high effcient melt blown web,resists dust ,oil and oil-free particular6. various ...
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