Cov yeeb nkab zawv zawg yog ua los ntawm cov khoom siv zoo 58-3 tooj liab, tsis muaj O-rings thiab cov ntaub ntawv sib khi, thiab tsis yooj yim rau hnub nyoog thiab xau. Kev sib txuas yooj yim ua haujlwm, nruj nreem txuas thiab ruaj khov. Txais tos kom nug.
