Woolen Pad, Nylon ncoo, poob siab haum cov ntaub ntawv rau nano, siv quav ciab

Woolen ncoo, nylon pad, poob siab nqus ncoo, tshuab yas yog cov khoom tseem ceeb, uas peb hu ua Super-huv tshuab. Tom qab polishing tshuab feem ntau ntawm cov vuas tuaj yeem ncav cuag rau 70 -80 degree, tom qab nano txheej txheem feem ntau ncav cuag txog 90 degree upto 110 degree. Ofcourse Qhov no yog rau kev siv, kev ua yeeb yam yuav sib txawv raws li cov ntsej muag sib txawv, polishing khoom txawv kua.