Using the microscopic data of China's industrial enterprises, this paper measures innovation efficiency by the sales revenue of new products as a share in total sales revenue, and examines SOE mixed ownership reform's innovation efficiency effect using PSM method under a "quasi-natural experiment" theoretical framework. Results indicate that: Mixed-ownership reform can significantly increase corporate innovation efficiency. Reformed SOEs are more efficient at innovation than foreign-funded firms, private firms and firms invested by Hong Kong, Macao and Taiwan. This paper provides robust evidence for evaluating SOE innovation performance after mixed-ownership reform, and offers policy implications for promoting SOE mixed-ownership reform.
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