Electric hoist is a small light lifting equipment, installed in the top of the crane, with small size, light weight, simple operation, easy to use features for industrial and mining enterprises, storage terminals and other places. Weight is generally from 0.1 to 80 tons, lifting height 3 to 30 meters. By the motor, transmission and rolls or sprockets, divided into wire rope electric hoist and electric chain hoist two. Electric chain hoist into two kinds of imported and domestic; wire rope hoist sub-CD1 type (single speed lift), MD1 (double speed boost); mini electric hoist, hoist, hoist multi-functional.