III. Khoom noj khoom haus qib yog dab tsi
A. Kev txhais thiab cov yam ntxwv ntawm cov khoom noj khoom haus qib
Cov ntaub ntawv qib zaub mov tuaj yeem tiv tauj rau zaub mov. Thiab nws cov txheej txheem yuav tsum ua raws li cov qauv kev nyiam huv thiab kev nyab xeeb. Cov yam ntxwv ntawm cov khoom noj khoom haus qib muaj xws li hauv qab no. Ua ntej, cov khoom siv raw yuav tsum tau soj ntsuam nruj thiab tswj cov txheej txheem ntau lawm. Thiab lawv yuav tsum tsis muaj tshuaj lom thiab tsis muaj mob. Thib ob, zoo mechanical thiab processing zog, haum rau kev tsim khoom noj thiab ua. Thib peb, nws tuaj yeem ua tau raws li lub neej txee thiab kev nyab xeeb ntawm cov khoom noj khoom haus. Plaub, nws feem ntau muaj cov tshuaj tiv thaiv zoo, ruaj khov, thiab glossiness.
B. Kev xav tau ntawm cov khoom noj khoom haus qib
Cov ntsiab lus tseem ceeb rau cov khoom noj khoom haus qib raws li hauv qab no. Firstly, lawv yog non-toxic thiab harmless. Cov khoom siv yuav tsis tsim cov tshuaj phem lossis ua rau tib neeg noj qab haus huv thiab ib puag ncig. Qhov thib ob, nws tsis yooj yim rau deteriorate. Cov khoom siv yuav tsum muaj kev ruaj ntseg, tsis hnov mob nrog cov zaub mov, thiab yuav tsis ua rau muaj ntxhiab los yog lwj ntawm cov zaub mov. Thirdly, nws yog resistant rau high kub. Cov khoom siv tuaj yeem tiv taus kev kho cua sov. Nws yuav tsum tsis txhob decompose los yog tso tawm cov teeb meem tshuaj. Plaub, kev noj qab haus huv thiab kev nyab xeeb. Kev tsim khoom, khaws cia, ntim khoom, thiab kev thauj mus los ntawm cov ntaub ntawv yuav tsum ua raws li cov qauv kev nyiam huv thiab kev nyab xeeb. Thiab nws tuaj yeem tswj tau lub xeev tsis muaj menyuam nyob rau hauv kev sib cuag nrog zaub mov. Thib tsib, ua raws li txoj cai. Cov ntaub ntawv yuav tsum ua raws li kev cai lij choj thiab cov cai.
