Is China No.4 Hydropower Bureau a state-owned enterprise or a central enterprise?

State-owned enterprises China Water Conservancy and Hydropower Fourth Engineering Bureau Co., Ltd. was established in June 1958+00, and is a large state-owned enterprise under China Water Conservancy and Hydropower Construction Corporation. Headquartered in Jinqiao Road, Dongchuan Industrial Park, Xining City, Qinghai Province, the company has a first-class professional contract for water conservancy and hydropower engineering construction, earthwork engineering, steel structure engineering and municipal public works construction, housing construction, tunnels and highway engineering.