摘要：As a main channel for the foreign economic cooperation of China nuclear industry,China Zhongyuan Engineering Corporation (CZEC) has been constantly engaged in technical modifications and management innovations in its exporting nuclear reactor *** the implementation of heavy water research reactor contract in Algeria,CZEC had established a complete and adequate design standards system in compliance with the international standards,and made significant modifications to the reference reactor in the aspects of reactor power and reactor safety,solved quite some technical issues which affected the reactor technical *** modifications and improvements enabled the technical parameters,safety features,reactor multipurpose application to attain to the advanced level in the *** the 300 MWe PWR NPPs in Pakistan,safety features had been updated in line with upgrading regulatory *** design philosophy and technology application demonstrated CZEC's creation and innovation on basis of constant safety enhancement of nuclear power *** had also been made by CZEC in promoting China made equipment items and components exportation.