Khoom siv: PU tawv, uas tsis yooj yim rau torn zoo li cov ntawv nplaum.Lawv qhov chaw yog yoog raws, hnav-tiv taus, ci ntsa iab, thiab ci, siv cov ntawv nplaum no tuaj yeem ua rau koj cov khoom tshwj xeeb.
Self-nplaum: Tsis xav tau cov kua nplaum los yog daim kab xev, nws tus kheej-nplaum tsim ua rau nws yooj yim heev rau tev thiab lo.Lawv tuaj yeem lo rau ntau qhov chaw du xws li daim ntawv tshaj tawm, yas, iav, ntoo, thiab lwm yam.
Tsim: Txhua daim ntawv lo tsim yog laser engraved thiab txiav.Cov xim ntawm cov ntawv engraved yog nyob ntawm lub hauv paus xim ntawm cov khoom siv uas yog los ntawm lub teeb xim av mus rau dub.Laser-txiav qhov tseem siv los pab nrog txuas cov ntawv rau cov khoom tiav.Cov ntawv tawv tawv tuaj yeem ua tus kheej nrog koj xaiv cov ntawv nyeem thiab lub cim.