1. Centre for China Public Sector Economy Research Jilin University Changchun Jilin China
2. School of Economics Jilin University Changchun Jilin China
3. Industrial Quality Research Department Ministry of Industry and Information Technology Electronic 5th Research Institute Guangzhou Guangdong China
4. School of Economics University of Bristol Bristol England
5. School of Applied Economics (School of Digital Economics) Jiangxi University of Finance and Economics Nanchang Jiangxi China