1.CD & MD series electric wire rope are widely used in industrial and mining enterprises, railway, wharf, warehouses, stock filed, etc. which can be installed in I-beam or kinds of bridge crane, gantry crane, single beam crane. They have the advantages of compact structure, light weight, safety operation, high commonality of parts, high capacity and easy maintenance. MD is the epitaxial product based CD. It has two big-small motors for fast and slow speed.