1. Cov qhov cua tuaj yeem thaiv cov dej noo, ntsev thiab qee cov kua corrosive, thiab muaj kev tiv thaiv zoo ntawm cov khoom siv thiab cov khoom siv hauv tsev nrog cov khoom tsis ruaj khov.
2. Nws muaj ob qhov kev ua haujlwm ntawm cov dej tsis zoo thiab ua pa. Tom qab tiv tauj cov kua ua kua xws li dej thiab roj, nws tuaj yeem rov qab ua haujlwm sai sai hauv lub sijhawm luv luv.
3. Vim yog cov kev faib tawm ntawm cov microscores ntom ntom nti ntawm daim nyias nyias, nws tuaj yeem thaiv cov hmoov av txheej thiab lwm yam loj hauv cov cua yam tsis muaj kev cuam tshuam nrog dej tsis muaj zog thiab ua pa.
4. Thaum siv ua ke nrog cov ntsaws ruaj ruaj, nws tuaj yeem tiv thaiv cov khoom xws li huab cua thiab noo noo los ntawm kev nkag mus rau hauv lub cev thiab tswj kev ruaj ntseg ntawm lub foob.
5. Rau cov ntaub ntawv uas nyob rau hauv kev sib cuag nrog cov dej nag, thiab lwm yam, nws tuaj yeem thaiv cov dej thiab lwm cov kuab tshuaj zoo.
6. Txhim kho lub neej ntawm cov khoom siv los yog cov khoom siv hauv tsev, thiab xyuas kom meej tias cov khoom siv los yog cov khoom siv tau yooj yim los ntxuav.
7. Nws tiv taus qhov kub thiab txias, muaj cov khoom tiv thaiv ultraviolet, thiab muaj cov tshuaj lom neeg ruaj khov. UV resistant, tsis tshua muaj chemically inert thiab resistant rau huab cua kub.
8. Nyias, hnav, thiab yooj yim rau kev tsim, nws yog ib qho zoo tshaj plaws waterproof thiab breathable khoom hnub no.