Investors under the infrastructure fund network are securities companies, fund management companies, trust companies, finance companies, insurance companies and insurance asset management companies, qualified foreign institutional investors, commercial banks and bank subsidiaries, policy banks, qualified private equity fund managers and other professional institutional investors who meet the investor suitability requirements of China Securities Regulatory Commission and Shenzhen Stock Exchange. The national social security fund, the basic old-age insurance fund and the annuity fund can participate in the offline inquiry of infrastructure funds according to relevant regulations.