... ,40W,60W,90W,120W,140W 3)Voltage:12,24,36 DC gear motorFeatures: 1) Dimensions of device: 42mm ... 120W, 140W,200w,250w,300w 3) Voltage: 12v,24v,36v48v,72v,90vNote : It's just the typical technical ... ,start to produce DC gear motor;2006 start to produce small series AC gear motor;2007 start to produce planetary ... man of standardgear motor> in 2010;ZD developed China's first ...