Independent centralized tswj system: ib tug kov tuaj yeem nqa nce thiab nqis platform, rub cov yees, thiab nqa theem nrab. Nws yooj yim ua haujlwm thiab ua haujlwm tau zoo.
Platform tuaj yeem nqa nce thiab nqis vertically thiab tiltable nqa hauv qhov siab. Ntawm qhov qis tshaj plaws, nws yog ib qho yooj yim rau nruab lossis demount yees, uas tuaj yeem ua tau los ntawm ib tus neeg.