UV number case yuav siv nrog tus cwj mem dawb, ntau lub tuam txhab tau luam tawm cov nyhuv zoo nkauj embossing, uas yog thawj zaug txuam ntawm cov xim dawb ntawm cov nyhuv embossing, thiab tom qab ntawd siv xim xim khawm uv luam tawm yuav ua tiav cov nyhuv embossing. Cov qaug zog tsis muaj zog vim hais tias nws tsis tuaj yeem tov nrog siv dawb cwj mem, yog li tsis muaj txoj kev luam tawm cov nyhuv.
Tsis tas li ntawd xwb, vim muaj ntau cov khoom luam tawm uas muaj cov pluaj tsis muaj zog uas yuav tsum tau ua cov kev kho mob, tsis muaj txheej txheem cov txheej txheem yooj yim rau ploj; thiab uv number case yuav ncaj qha siv los luam tawm ntau cov ntaub ntawv, tsis tas yuav tsum ua Cov txheej txheem kho, yooj yim, yooj yim thiab siv tau.
