I-EN 149 iyindinganiso yaseYurophu yokuhlola kanye nezidingo zokumaka zokuhlunga imaski ewuhhafu.Izifihla-buso ezinjalo zivala ikhala, umlomo nesilevu futhi zingase zibe namavalvu okuphefumulayo kanye/noma okukhipha umoya.I-EN 149 ichaza amakilasi amathathu anjalo imaski eyingxenye yezinhlayiyana, ebizwa nge-FFP1, FFP2 kanye ne-FFP3, (lapho i-FFP imele ukuhlunga ...
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