Iyo inoraswa 3ply kumeso mask/respirator inoumbwa ne3 akaturikidzana emasefa substrates:
1st : Kunze layer-PP isiri-yakarukwa;
2nd: Yakakwira density sefa layer-PP inonyungudika yakavhuvhuta;
3rd: Ganda rekuchengetedza ganda-PP machira asiri akarukwa.
Inokwana pamusoro pemhino nemuromo.Inobvisa tunhu tudiki diki kubva mumhepo yaunofema.Zvimedu izvi zvinosanganisira utachiona (sevhairasi, mabhakitiriya, uye mold) nemamwe marudzi ehuruva.Iyo mask inoraswa haina nzvimbo dzekutsiva, iyo inofanirwa kukandwa kure mushure mekushandiswa.