T no yog feem ntau ob hom ntawm daim ntawv rooj plaub: ib qho yog ib nplooj ntawv-xa hom, zoo li cov nplooj ntawv ntawm phau ntawv; Qhov thib ib yog hom kev sib hloov. Ntawd tej khoom, tawv (tsiaj tawv) thiab tawv tawv (pu, PVC) yog qhov ntau tshaj, xws li hnab nyiaj, tsim rau nqa.
Nyob rau hauv lub neej niaj hnub, ntau dua los yog tsawg dua txhua tus xav nrog CARDS, xws li ntau hom CAR CARDS, bank CARDS, supermarket CARDS, CARDS yuav khoom, daim pib ua tswv cuab. Yog li ntau CARDS tsis yooj yim rau kev khaws cia, nws nyiam chaos, feem ntau nqa ntau teeb meem tsis tseem ceeb. Lub hnab nyiaj yog tsim los tswj cov CARDS ntau thiab nws yog qhov khoom ntawm kev lag luam niaj hnub.
Ntxiv rau qhov kev ua haujlwm ntawm kev tswj cov ntawv ntau ntau yooj yim thiab yoojyim, daim ntawv rooj plaub kuj tuaj yeem ua si ua haujlwm tawm, kom tsis txhob muaj teeb meem ntawm daim npav degaussing.