Research on the brand image of state-owned enterprises Research on board diversity of state-owned enterprises Research on green auditing mechanism of state-owned enterprises Research on real estate investment of state owned enterprises Research on the income sharing system of the state-owned enterprises Research on leadership institution of state-owned enterprises 并列题名：Research on board diversity of state-owned enterprises Research on Strengthening the Reform of State-owned Enterprises Research on competition neutrality system of state-owned enterprises 并列题名：Research on green auditing mechanism of state-owned enterprises