Research on the choice of ownership structure of mixed ownership enterprises 并列题名：Research on the choice of ownership structure of mixed ownership enterprises Study on the employee stock ownership plan of mixed ownership enterprise 并列题名：Study on the employee stock ownership plan of mixed ownership enterprise Research on the dual class shares structure of Chinese enterprises Research on leadership institution of state-owned enterprises a dual perspective of ownership structure and executive incentive Research on real estate investment of state owned enterprises Research on the brand image of state-owned enterprises