https://www.jonyautoparts.com/kn95-face-mask/
Jin Xiangyu: Qhov ncauj qhov ntswg KN95 / N95 tseem muab faib ua cov pa ua pa thiab cov neeg uas tsis muaj cov pa ua pa. Rau cov qhov ncauj qhov ntswg, breathability thiab filtration efficiency yog ib txwm muaj kev sib cav. Yog tias qhov pom kev ua haujlwm tau zoo, koj yuav hnov mob ib ce heev. Lub nqus pa valve yog tsim los daws qhov ua tsis taus pa.
Lub exhalation valve thiab lub laum pa yog qhov hloov hloov tshuab. Lawv kaw thaum nqus pa, thiab lub valve qhib thaum nqus pa. Huab cua yog" kuaj" los ntawm txheej lim. Lub valve qhib thaum tso pa tawm, txo qhov kev nkag siab. Qhov teeb meem yog tias nws tsis paub meej tias lub tshuab hloov hluav taws xob no yuav cia li tawg tam sim ntawd thaum hnav, lossis nws yuav ntes los ntawm cov khoom me me, tso cai rau cov phom sij ntawm cov huab cua uas tsis tau dhau los ntawm txheej txheej nkag mus. Yog li, txhua hom kev kho mob qhov ncauj qhov ntswg tsis muaj qhov tsis muaj pa ua pa. Nyob rau tib lub sijhawm ntawd, peb tseem thov rov hais dua tias lub sijhawm tiv thaiv kev kis mob, tshwj xeeb tshaj yog thaum ib puag ncig ib puag ncig tsis zoo, cov neeg zoo tib yam tseem sim xaiv lub ntsej muag KN95 / N95 uas tsis muaj lub ntsej muag ua pa lossis lub qhov ncauj phais mob.
https://www.jonyautoparts.com/kn95-face-mask/
