Distinguishing yeeb nkab khoom: zoo aluminium-yas yeeb nkab yog ib tug 5- txheej wrapping qauv, muaj ib txheej ntawm kub sol ntawm polyethylene thiab txhuas yeeb nkab, thiab ob txheej tsis tuaj yeem tev tawm; inferior aluminium-yas yeeb nkab yog peb txheej txheej, thiab tsis muaj cua sov ntawm txhuas thiab polyethylene. Melt kua nplaum, yooj yim tev tawm ntawm tes. Los ntawm qhov pom ntawm kev siv tshuab, cov kav dej zoo aluminium-yas yog cov txheej txheem zoo, thiab cov ntawv nyeem sab nraud ntawm cov yeeb nkab yog luam tawm los ntawm inkjet; inferior aluminium-yas kav feem ntau pheej yig heev, vim hais tias lawv yog ua los ntawm cov ntaub ntawv uas tsis yog-high-density polyethylene, thiab cov ntawv nyeem nyob rau sab nraum cov yeeb nkab, luam tawm los ntawm lub tshuab ntaus ntawv zoo tib yam, cov ntawv sau yog fuzzy.
