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【Cov ntsiab lus】 Lub cav grapple yog ib qho ntawm cov khoom txuas rau excavator ua haujlwm, tshwj xeeb tsim thiab tsim kom tau raws li qhov tshwj xeeb ua haujlwm ntawm excavators. Nws yog ib qho ntawm cov khoom siv rau cov khoom siv ua haujlwm excavator. Lub log rub lub plhaub muaj tsib yam tseem ceeb hauv qab no, whi...Nyeem ntxiv»