Cov pob riam ntawm kev ua lag luam daim ntawv siv yog siv los ua ib daim ntawv tuab ua kom daim tawv tuab los txo qhov tawg thaum nws khoov, thiab nws yog yooj yim khoov.
Taws riam feem ntau siv los ua daim ntawv yooj yim rau rhuav.
Tus riam ntxeem yog siv los tuav cov pa hauv kos npe thaum folding qhov thwj toob.
Kev siv lub tshuab ua lag luam yog siv los sib faib khoom ua ob yam los yog txiav mus rau ntau qhov chaw, los yog cov ntawv txheeb tais ncaj qha ncaj qha, thiab daim ntawv ntug txiav tawm ntawm rab riam, khoom.
Nws yuav tsum tau sau tseg tias qhov riam qhib muaj ntau lub qauv nyob ntawm seb qhov loj me ntawm cov hniav thiab qhov nqis saud.
