... After-sale service CD1, MD1, HC1, HM1 wire electric hoist is a widely used in enterprises which need lifting equipment ... working principle of CD1, MD1, wire rope electric hoist CD1, MD1 rope electric hoist is made up by 3 parts: Hoisting mechanism ... slow speed. It is different with CD1 rope electric hoist merely in hoisting mechanism and electrical control devices. electric chain hoist light weight