1. Loj loj roj hmab log.Nyob ntsiag to, hnav-resistant, tsis plam.2. Txhim khu kev ruaj ntseg ntawm lub braking system.3. Kev yuav khoom yooj yim, tsis tas yuav nqa los ntawm tes.4. Tsis-slip daim txhuam cev armrest, xis tuav.5. Qhov siab tshaj qhov backrest ua rau cov neeg laus nyiam kev vam khom.6. Tsis-slip handrail, ...
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