Cov ntaub ntawv ntau hom khoom sib txawv, cov ntaub ntawv sib txawv, tab sis feem coob ntawm cov khoom noj xaiv nrog cov ntim yas, yog vim li cas cov khoom noj khoom haus yas tau txais ntau hom kev siv?
Tam sim no ntau thiab ntau cov khoom raug xaiv los siv cov hnab yas ntim khoom los tsim, tshwj xeeb tshaj yog raws li cov khoom noj kom haus yam, qhov tseeb, nrog cov zaub mov yas ntim hnab kom pob cov ntsiab lus tseem ceeb rau cov khoom noj nram qab no:
1, ib puag ncig tiv thaiv: kev siv cov yeeb yaj kiab zaj duab xis luam, tsis muaj tshuaj lom thiab kua zaub ntsuab, nyab xeeb thiab tus phooj ywg zoo;
2, sealing kev ua tau zoo: kev sealing ua tau zoo tuaj yeem ua si tiv thaiv kab yoojyim yooj yim rau lub luag haujlwm;
3, ua kom pom tseeb: Cov khoom ruaj khov, cov khoom ntim tsis yooj yim zom;
4, muaj peev xwm: kev tsim qauv tsim, tsim kom pom cov yam ntxwv ntawm cov khoom kom zoo los txhawb nqa lawv cov khoom, thiab cov khoom noj khoom ntim yas tuaj yeem ua tau ntau hom siv, xws li peb sab Sealed, khoob, tswj yus tus kheej, zippers thiab lwm yam ntaub ntawv .
