https://www.jonyautoparts.com/kn95-face-mask/
Dong Peng hais rau cov neeg sau xov xwm tias cov tsiaj ntawv sawv cev txawv ntawm cov qauv hauv tebchaws. Cov N ntawm lub npog ntsej muag yog cov qauv Asmeskas, KN series yog qauv Suav, FFP series yog European qauv, thiab KF series yog Kauslim cov qauv. Cov lej nyob rau sab nraub qaum yog hais txog kev tiv thaiv kev muaj peev xwm, qhov kev tiv thaiv ntau dua, qib kev tiv thaiv ntau dua. 95 yog hais txog lub peev xwm lim tawm ntau dua 95% ntawm cov khoom tsis muaj roj. Lub 90 series tsis muaj qhov muaj zog tiv thaiv ntawm 95, tab sis nws tuaj yeem tiv taus ntau dua 90% ntawm cov kab. Hauv FFP series, 2 theem pib sib piv rau 95, thiab 3 txhais tau tias kev lim dej rau cov lim ntshav siab dua, nce mus txog 99%. AV tom kawg ntawm tus lej qhia tias muaj lub pa ua pa.
Yog tias koj xaiv lub peev xwm lim, nws tuaj yeem nkag siab yooj yim xws li:
FFP3> FFP2=N95=KN95=KF94> KN90.
https://www.jonyautoparts.com/kn95-face-mask/