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china hman machinery produce linear actuator, slewing drives, slewing bearing and related components, which are mainly applied in single or dual axis solar tracking systems, construction vehicles, port machinery, modular vehicles, small wind power systems and satellites. 

Slewing drives are being chosen by customers home and aboard for PV/CPV and solar thermal tracking systems due to the combination of slewing bearing with the hourglass worm shaft, which provides more tooth contact, increased drive torque and smoother rotation. There are many models to meet both regular and precise tracking requirements in PV, CPV and solar thermal power tracking fields.