Gearbox, Reducer, Sprocket manufacturer / supplier in China, offering Ratio 55: 1 Worm Gear Planetary Slewing Drive Reducer for Solar Energy Photovoltaic Panels, Factory Ratio 55: 1 Worm Gear Design Planetary Gearbox Motor Slewing Drive Reducer for Solar Tracker with 24V DC Motor, Ratio 50: 1 Solar Tracking Worm Gear Planetary Motor Gearbox Reducer Slewing Drive and so on.