In the winch industry, JM model slow speed electric winch is most commonly used winch in construction site or workshop, etc. And power supply for the electric winch varies from 110v-440v/50&60HZ according to different countries’ situation. The electric winch also can divided into: construction winch, marine winch, mine winch, building winch, cable winch, etc. With different models, speeds and structures, electric winch is used widely, such as road construction, bridge construction,factory, mines engineering, harbor, building, etc.