Why is CNNC 5 a central enterprise and CNNC 24 a state-owned enterprise?

CNNC Fifth Hospital is a state-owned enterprise and a central enterprise. Founded in 1964, the company belongs to China Nuclear Industry Construction Group. 1984 was registered as "Shanghai Petrochemical Installation and Maintenance Engineering Company". In 2006, it was renamed and registered as "China Nuclear Industry Fifth Construction Company", and in 2009 it was restructured and registered as "China Nuclear Industry Fifth Construction Co., Ltd.". It is a state-owned construction enterprise with four first-class general contracting qualifications for chemical petroleum engineering, electric power engineering, electromechanical installation engineering and housing construction engineering, and four first-class professional contracting qualifications for nuclear engineering, steel structure engineering, lifting equipment installation engineering and chemical petroleum equipment pipeline installation engineering, and has the qualification for foreign economic cooperation.

CNNC 24 is a state-owned enterprise. The full name of the company is China Nuclear Industry 24 Construction Co., Ltd., the industry is housing construction, and the area is Sichuan Province. The projects the company participated in include Qinshan Nuclear Power in Zhejiang, Haiyang Nuclear Power in Shandong, Fuqing Nuclear Power in Fujian, Shidaowan Nuclear Power in Shandong and Pengze Nuclear Power in Jiangxi. The company's specific business scope includes: installation and maintenance of lifting machinery; Retail of refined oil; Housing construction engineering, electric power engineering, municipal public works, highway engineering, nuclear engineering, earthwork engineering, foundation and foundation engineering, electromechanical equipment installation engineering, steel structure engineering, fire control facilities engineering, building waterproof engineering and lifting equipment installation engineering; Sales of building materials; Mechanical equipment leasing; Metal structural parts, mechanical equipment processing and repair.