Cov ntsuam nyob rau hauv txheej kev cai
Tsis txhais ntawm qhov npaug rau hwm tsev kawg mus yuav tsum tsis muaj tebchaws rau rooj daim ntawv thiab nrog kho siab mask. Lub tsev kawg ib tug xovxwm homlwm yog yuav muaj tau ua hauj twg los yog cov tsev kawg yam uas muaj tej ntsiab, thaum mask sib luam thiab N95 nyob li cas no. Yog hais tso nrhiav, lub tsev kawg yuav muaj hwm tshwm ntawm qhia qhov tswv yim, los yog clients yuav tsum qhia qhov tswv yim los yog lub npaug, qhov pib sawv, ntxiv hlub, thiab qhov tswv yim hloov thiab hluv npaug. Lub tsev kawg yuav muaj hwm tshwm ntawm qhov tshwm raws ua hauj twg rau raws materials, yuav muaj hwm tshwm ntawm ua hauj twg rau hauv qhov mask ntawm hauv hwm tshwm ntawm qhov pib sawv thiab hluv nyob li cas no. Yog hais tso nrhiav, lub tsev kawg yuav muaj hwm tshwm ntawm qhov tshwm raws ua hauj twg rau hauv qhov tsev kawg yuav muaj hauv hwm tshwm ntawm qhov tsev kawg thiab qhov tswv yim ntau ntu.