Independent centralized tswj system: ib tug kov tuaj yeem nqa thiab nqis platform, rub ntauwdRing-shaped hydraulic yees kom 360 ° tig. Vertical cylinders muab lub zog rub tsis muaj zog tiv thaiv. Qhov siab ua haujlwm sib txawv (375 ~ 1020mm) yog tsim rau cov neeg ua haujlwm sib txawv.