(1) Lub pob muaj lub zipper kaw, uas tuaj yeem rov qab siv tau thiab tuaj yeem kaw cov khoom.
(2) Dawb ntawm BPA thiab FDA pom zoo cov khoom noj khoom haus qib.
(3) Nws thaiv cov teeb ci ultraviolet, oxygen thiab noo noo los ntawm lub ntiaj teb sab nraud, ua kom nws tshiab ntev li ntev tau.
(1) Cov ntaub ntawv khoom siv thiab kev tsim qauv tuaj yeem tso tawm rau pem hauv ntej, nraub qaum thiab sab.
(2) tuaj yeem thaiv UV lub teeb, oxygen thiab ya raws sab nraud, thiab ua kom qhov tshiab kom ntev li ntev tau.
(3) Lub thawv ntim lub thawv zoo li zoo nkauj dua thiab zoo nkauj.
(1) Khoom noj khoom haus qib.
(2) Ib leeg-haus / ib-txoj kev valve tuaj yeem muab ntxiv.
(3) Ib qho yooj yim zipper, yooj yim tsim kua muag zipper, tin-kie tuaj yeem xaiv.
(4) Tear notch yuav tsum tau ua kom nws yooj yim qhib.