Chaw nres tsheb nrov plig plawg raug xa mus rau Huadu qhov project site. Peb cov neeg ua haujlwm engineering tab tom txhim kho qhov chaw nres tsheb flap kaw tiag tiag hauv huab cua kub.
Tom qab ntau tshaj li ib lub lim tiam ua haujlwm, peb thaum kawg ua tiav kev teeb tsa ntawm qhov chaw nres tsheb flap lock system.
Qhov chaw nres tsheb flap xauv qhov system yuav raug sim thiab khiav sai sai.