Cov ntawv nplaum, tseem hu ua cov ntaub ntawv nplaum rau tus kheej, yog cov ntaub ntawv sib xyaw uas siv cov ntawv, zaj duab xis lossis cov ntaub ntawv tshwj xeeb ua cov ntaub, coated nrog cov nplaum rau sab nraub qaum, thiab cov ntawv tiv thaiv silicone-coated raws li daim ntawv thaub qab. Vim muaj ntau yam txheej txheem txheej txheej, uas ua rau tsim cov ntawv nplaum tam sim no muaj cov qib sib txawv, kev txhim kho tam sim no yog los ntawm cov txheej txheem cov txheej txheem, cov txheej txheej scraper mus rau cov kev taw qhia ntawm high-pressure cam khwb cia txheej, txhawm rau kom ntseeg tau tias muaj kev sib haum xeeb ntawm txheej txheej mus rau qhov loj tshaj plaws, kom tsis txhob muaj cov npuas thiab koob qhov muag, los xyuas kom meej qhov zoo ntawm txheej, thiab cam khwb cia daim ntaub txheej nyob rau hauv lub domestic technology tsis paub tab, lub ntsiab domestic siv yog cov tsoos roller txheej.