tshuaj
Cov hauv paus ntsiab lus hauv qab no yuav tsum tau ua raws li hauv kev ntim cov tshuaj:
(1) Tiv thaiv kev hloov pauv ntawm cov tshuaj zoo
(2) yooj yim siv
(3) muaj peev xwm muab cov ntaub ntawv piav qhia, xws li cov yam ntxwv ntawm cov tshuaj thiab nws siv.
Cov yam ntxwv ntawm aluminium foil hauv kev ntim tshuaj yog raws li hauv qab no:
(1) Kev tiv thaiv muaj nuj nqi: (1) Moisture resistance (2) Light shielding (3) Air shielding.
(2) Siv kev ua tau zoo: ① yooj yim los tsim kua muag; ② aluminium foil yog ib qho nyuaj, yooj yim tshem tawm cov tshuaj.
(3) Cov ntaub ntawv qhia: qhov saum npoo ntawm cov ntawv txhuas tuaj yeem luam tawm lossis kos duab, muaj peev xwm nqa cov ntawv thiab cov ntaub ntawv qauv.
