The MD1 steel wire rope electric gourd is the derivative version of the CD electric gourd, which means that both of which are similar, and the MD1 steel wire rope electric gourd has two speeds, namely one -speed and dual speed. The CD steel wire rope electric gourd is also called CD1 steel wire rope electric gourd. It is a gourd that was born earlier. It is characterized by fast improvement. This gourd has a good memory. Basically, it is 8m/min. Its volume is relatively large. With the increase of the rise height, the thickness of the wire rope and the size of the roller will change. CD1 is a single -speed type in popular, and another model is MD1 dual -speed. As the name suggests, it has two speeds. Welcome to consult Ri Zhi about selection issues.