1. Simplify the mechanism---reduce the amount of parts:not only reduce total cost but also improve reliability;
2. Optimize the streamline of hub and dome---reduce its resistance and improve propulsion efficiency;
3. using finite element analysis method to design the mechanism---average the stress and low down the peak stress, improving the reliability and longevity;
4. The blade sealing are specially design so that the sealing be more reliable, without any leak, which ensure our CPP meet the requirements of law of anti-pollution of sea and ocean.
5. The interface between twin-tube and hub/shafting being improved so that CPP be more reliable and maintenance/repairing be more convenient;
6. Reduce the max work pressure when changing pitch, which correspondingly reduce the power consumption of hydraulic system and extend its longevity.

Typical application: Suitable for:fish boat, tugoffshore cargo vessel, ferry, harbor service ship, oil tanker and other multi-operation-condition ship or other ships which require high mobility