CYG SUNRI CO., LTD. ("CYG SUNRI") is a wholly-owned subsidiary of the listed company Changyuan Technology Group Ltd. (stock name: CYG, stock code: 600525.SH).

As a well-known professional brand of automatic and intelligent power system, CYG SUNRI is dedicated to global energy technology innovation and quality services. In 1994, CYG SUNRI was restricted to a company from the China's Ministry of Electric Power | Power Automation Research Institution | Relay Protection and Substation Automation Lab. With its business covering more than 80 countries around the world, CYG SUNRI is the main partner of State Grid Corporation of China, China Southern Power Grid and other major energy companies.