Electric gourds have the advantages of light weight, small size, compact structure, many varieties and specifications, and balancing operations. They can be used straight, curved, overhead orbit on the same plane. Single beams, manual single beam cranes, bridge cranes, suspension of heavy machines, cantilever cranes, Longmen cranes and other cranes. Among them, the CD1 and MD1 electric gourds are widely used in factories, cargo stacks, docks, power stations, logging fields and other occasions.