Research on legislation of public-private partnership in China Research on the legal nature of public private partnership contract Study on the legislation of public-private partnership Progress report on eco-environmental public-private partnership in China 并列题名：Study on the legislation of public-private partnership Research on the rule of law of public-private partnership in vocational education Research on legislation of commercial mediation in China 并列题名：Research on the rule of law of public-private partnership in vocational education innovation and application of public-private partnership Research on the risk sharing mechanism of public-private partnership in public goods supplying