Taw qhia rau nqaj hlau
Tshaj-voltage, hauv-voltage, thiab txhaum theem tiv thaiv cov cuab yeej rau kev nqa lub platform
Cov kev ceev faj rau kev tswj hwm sab saum toj ntawm lub tawb nqa ntawm lub tshuab nqa khoom
Cov hlua hlau rau kev nqa platform
Yooj yim laj kab ntawm kev nqa platform
Pem teb chaw tiv thaiv kev nyab xeeb lub qhov rooj ntawm kev nqa platform
Tsis rau kev nqa platform
Kev txhais ntawm lub luag haujlwm voj voog ntawm kev nqa platform
Cov kev ceev faj rau kev hloov ntawm cov kis thiab racks ntawm lub tshuab nqa
Cov kev ceev faj txog kev nyab xeeb kev hloov ntawm lub chaw nqa khoom
Cov kev ceev faj rau kev tiv thaiv lub caij nplooj zeeg tiv thaiv kev nyab xeeb ntawm nqa cov chaw
Tus txheej txheem ua haujlwm ntawm aluminium alloy of the elevator
