Sanmen Nuclear Power Plant Project Unit3 and Unit 4 and State Nuclear Power PWR Demonstration Power Plant: Sanmen Nuclear Power Plant Project is the first project approved by China State Council for adopting the most advanced technology in the world, AP1000. State Nuclear Power PWR Demonstration Power Plant Project was one of the 16 major special programs listed in National Middle and Long-term Development Plan for Science and Technology. SDEPCI was responsible for the equipment & material procurement, construction & installation management and design management for CI and BOP engineering for both Sanmen Nuclear Power Plant Project Unit3 and Unit 4 and State Nuclear Power PWR Demonstration Power Plant.