Qauv CD, MD Hlau hlua Hluav Taws Xob Hoist yog cov khoom siv nqa me me, uas tuaj yeem ntsia tau rau ntawm ib lub nqaj, choj, gantry thiab caj npab cranes.Nrog me ntsis kev hloov kho, nws kuj siv tau los ua ib lub winch.Nws yog dav siv hauv factories. , mines, harbours, warehouses, cargo storage area and shops, yog ib qho tseem ceeb hauv kev txhawb nqa kev ua haujlwm thiab txhim kho kev ua haujlwm.