Is China Construction Fifth Bureau a central enterprise or a state-owned enterprise?

According to the inquiry (Aiqicha), the installation company of China Construction Fifth Bureau was established in 1995, ranking among the top 500 companies in the world13-a key member enterprise of China Construction Fifth Bureau under China Construction Group. At present, it has seven first-class qualifications, such as AAA credit rating and general contracting of housing construction, general contracting of electromechanical installation and professional contracting of steel structure engineering. As well as railway electrification, railway electrification, railway track laying and beam erection and other professional qualifications, it is a first-class general contracting enterprise for installation engineering construction in China, with five regional branches in North China, East China, Central China, South China and Southwest China and a professional branch of railway electrification.