Rau kev ntxuav, tua kab mob, ua kom tsis muaj menyuam, cov kev pabcuam tu yog tsim los tshem tawm thiab txo cov microbes, tab sis tsis tua lawv.Feem ntau siv txoj kev: ntxuav dej, tshuab decontamination, decontamination tus neeg saib xyuas, thiab lwm yam. Nws yog tsim rau kev kho dav dav ua ntej disin ...
Nyeem ntxiv