Lub taub hau ob lub taub hau tsis muaj dej yog ib qho tshwj xeeb tsim cov cuab yeej sau ntawv, nws qhov tseem ceeb tshaj plaws yog tias nws muaj ob qhov sib txawv los yog kev ua haujlwm ntawm tus cwj mem taub, thiab nws tus cwj mem muaj cov khoom tsis zoo. Tus cwj mem feem ntau tuaj nrog cov lus nyias nyias rau kev sau ntawv zoo, ua kom pom tseeb, lossis cim cov ntsiab lus, thiab cov lus qhia tuab rau kev sau ntawv ceev, hauv qab, lossis kos cov cheeb tsam loj.
Waterproof kev ua tau zoo yog lwm qhov tseem ceeb ntawm ob lub taub hau waterproof marker. Tus number case yog tsim tshwj xeeb los ua kom cov ntawv sau meej meej thaum raug dej, ua rau nws zoo tagnrho rau siv nyob rau hauv qhov chaw ntub dej lossis qhov chaw tsis muaj dej yuav tsum tau kos npe. Cov yam ntxwv no ua rau lub taub hau ob lub taub hau dej tsis zoo siv dav hauv kev tshawb nrhiav sab nraum zoov, dej ua si, chaw kuaj xyuas, ua noj ua haus hauv chav ua noj thiab ntau qhov chaw.
Tsis tas li ntawd, ob-txoj kev tsis muaj dej tsis zoo feem ntau yog ua los ntawm cov khoom siv cwj mem zoo thiab tsim kom haum, kom ntseeg tau tias txhais tes tsis qaug zog thaum sau lossis kos rau lub sijhawm ntev. Nyob rau tib lub sijhawm, qee cov khoom lag luam qib siab kuj tseem ntxiv cov khoom xyaw kom qhuav sai rau tus number case, kom cov ntawv sau tuaj yeem qhuav sai sai tom qab sau ntawv, txo qhov kev pheej hmoo ntawm kev tshem tawm lossis qhov muag plooj.
Txhawm rau ua tiav, ob lub taub hau tsis muaj dej tsis zoo yog cov cuab yeej sau ntawv nrog ntau lub zog, kev ua haujlwm tsis zoo thiab siv tau yooj yim, uas yog tsim rau ntau lub sijhawm uas yuav tsum muaj cov cim dej tsis zoo thiab kev sau ntawv zoo.
