HITACHI yog ib lub tuam txhab ua haujlwm of the elevator hauv ntiaj teb, nrog keeb kwm ntawm kev tsim kho tshiab thiab kev ua tau zoo. Txhawm rau ua kom tiav lawv txoj haujlwm ua haujlwm of the elevator hauv Suav teb, lawv xav tau ib tus neeg muab khoom lag luam txhim khu kev qha thiab zoo ntawm elevator qhia cov lus qhia thiab qhov chaw.