Is CNNC Maintenance Co., Ltd. Shenzhen Branch a state-owned enterprise?

It is a state-owned enterprise. According to Tianyan, CNNC Maintenance Co., Ltd. is a wholly-owned subsidiary of China National Nuclear Corporation (CNNC), a state-owned enterprise, and a company specializing in the maintenance, maintenance, transformation and engineering construction of nuclear power plant equipment. CNNC maintenance co., ltd has set up branches in different regions, and Shenzhen branch is one of them. As a branch of CNNC Maintenance Co., Ltd., Shenzhen Branch also belongs to the category of state-owned enterprises.