Number case rau kev tshuaj ntsuam luam tawm ntawm cov ntaub npuag:
1: Nws tiv taus kev tawm hws ntawm tes.
Nias koj tus ntiv tes xoo rau ntawm tus qauv muab luam tawm thiab txhuam nws rov qab los thiab dhau los kom 100 zaug. Tus number case tsis' t thim.
2: 3M nplaum daim kab xev tuaj yeem' t rub tawm.
Siv American 3M nplaum kab xev los lo ntawm tus qauv number case, txuas ntxiv rub tawm 10 zaug, tus number case tsis rub tawm.
3: Vijtsam luam ntawv tsis thaiv qhov screen.
1.3mm cov ntawv me me kuj tuaj yeem luam tawm kom pom tseeb ntawm tus cwj mem, qhov kev tsim tawm tau nce li 1.5 npaug.
4: Ncoo luam ntawv tsis kos duab.
Thaum lub tshuab luam ntawv ncoo, lub taub hau roj hmab tsis kos, thiab tsis muaj tus cwj mem los so ntawm cov hlau phaj, yog li qhov kev ua haujlwm tau nce ntxiv txog 1.2 zaug.
5: Kev kuaj dej caw hauv dej cawv.
Tus mem kua tsis poob tawm tom qab 100 lub sij hawm rubbing nrog 500g quab yuam.
6: Kev tiv thaiv ib puag ncig ntsuab.
Tus number case ua tau raws li cov cai ntawm kev tiv thaiv ib puag ncig ntawm EU, Tebchaws Asmeskas thiab Nyij Pooj.
7: Lub Hoobkas muag ncaj qha.
Liande txais yuav kev tswj hwm ISO zoo, nrog cov khoom ruaj khov thiab kev xa khoom ceev.
