Sd series intelligent electric actuator is that our company adopts france bernard company’s technology to produce with the world advance level. The main assembly units are all imported. The whole machine assembly in strict accordance with french production technology. The whole machine test strictly enforce national standards and international standards. Sd series are the terminal control device of industry process measure and control system. Sd series can convert the system control signal into output device travel (quarter turn, multi-turn and linear travel) output torque or force to control the closure device position of the valve or other regulating mechanism, make the medium work as stipulated in the system.