Cov thoob ntim elevator yog ib hom kev thauj khoom thauj ntsug rau kev thauj cov khoom siv .Such ntsug thoob hauv lub elevator muaj ob hom, ib qho yog cov thauj khoom lub tawb, lwm qhov yog ob lub tawb thauj khoom. Ntsug cov thawv nqa khoom siv tau dav siv hauv tsev cov ntaub ntawv, kev lag luam tsuas, ntau txheej txheej rhiav, chaw rau khoom thiab lwm cov chaw nres nkoj. Ntsia thawv elevators sawv yooj yim heev thiab ruaj khov kev nyab xeeb, thiab lwm yam. Ntsug cov thawv ntaiv feem ntau yog ua los ntawm steel cov qauv, thav duab qauv, cov qauv hoist, khoom siv kev nyab xeeb, tswj hluav taws xob, thiab lwm yam.
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