1. Tsis muaj tshuaj lom thiab cov kev mob tshwm sim, tsis muaj kuab tshuaj thiab muaj hluav taws kub, yog li tsis muaj kuab lom "thiab lwm yam kev phom sij hauv pej xeem, nyob rau hauv txoj cai nrog cov kev cai ntawm Lub teb chaws ib puag ncig kev tiv thaiv txoj cai.
2. Hmoov txheej txheej muaj cov khoom siv siab ntawm cov khoom nyoos. Cov hmoov tsim los ntawm qee hom hmoov cov hmoov tuaj yeem siv tau thiab rov siv dua tshiab, thiab kev siv kev siv kev siv tau ntau dua 90%.
3. Tom qab kev kho mob ua ntej - Kev kho mob kom tau coated, txheej xim ntawm cov thickness txaus tuaj yeem tau nyob hauv ib qho kev tsim khoom tsis muaj qhov pib. Nws yog ib qho yooj yim kom paub cov haujlwm tsis siv neeg, ntau lawm ntau lawm kev ua tau zoo, thiab tus nqi tswj hwm.
4. Cov txheej yog ntom thiab ntse, nrog kev cuam tshuam zoo, thiab muaj kev sib raug zoo, siab tshaj tawm cov tshuaj kho hluav taws xob tsis kam thiab hluav taws xob rwb thaiv tsev zog. Hmoov txheej cia thiab tsheb thauj tau muaj kev nyab xeeb thiab yooj yim.
