CD type and MD type wire rope electric hoist is a kind of light and small lifting equipment, which can be installed on hoist single beam, bridge crane, gantry crane and cantilever crane. With slight changes, it can also be used as a winch. Therefore, it is one of the commonly used lifting equipment in factories, mines, ports, warehouses, freight yards, stores and other places, and it is a necessary machine to improve labor efficiency and improve labor conditions.

The lifting speed of CD, type electric hoist is constant, which can meet the general use requirements; MD, type electric hoist has two lifting speeds - normal speed and slow speed. When working at a slow speed, it can meet the requirements of precision loading and unloading, sand box mold closing, machine tool maintenance and other fine operations. Therefore, MD type electric hoist is more applicable than CD type electric hoist.