Wire  rope electric hoists have single speed hoists and double-speed hoists. The one of the main advantages of MD1 electric hoist can be changed the button to reduce the lifting speed of the weight when the weight is about to be lifted to the specified height. This will be safer to use. Wire rope electric hoists can be used alone,  but also with the manual chain hoists,  electric chain hoists or electric trolley moving chain assembly used together.This is more convenient to use and more widely.