● Kugwiritsa ntchito kamodzi kokha.Gwirizanani ndi Chinese Test Standard GB2626:2006.
● Maonekedwe opindika a mbali zitatu, kachidutswa ka mphuno chosinthika, ndi zotanuka zamakutu zapamwamba kwambiri kuti muteteze makutu anu.
● Zinthu zopanda poizoni komanso zosapsa mtima.
● Mankhwalawa ali ndi chitetezo cha zigawo za 5;kupereka mkulu tinthu ndi mabakiteriya kusefera bwino.
● Particle Filtration Efficiency (PFE): GB 2626 ≥95%.
● Pewani mabakiteriya, fumbi, mungu, tinthu tating'ono ting'onoting'ono tochokera mumlengalenga, utsi ndi nkhungu.