This paper takes the listed companies from 2016 to 2020 as the research object and uses the Intermediary effect model to explore the relationship among supply chain concentration ratio, R&D investment, and enterprise performance. The research finds that supply chain concentration ratio has an inhibitory effect on enterprise performance, and R&D investment plays a partial mediating role between the two variables. Based on this, this paper believes that enterprises can formulate appropriate supply chain concentration ratio according to their own business situation and market position; Strengthen supply chain relationship management, reduce information asymmetry while fully utilizing heterogeneous innovation resources brought by the supply chain; Establish a supply chain supervision and management mechanism to avoid the adverse impact of too high concentration of supply chain, so as to improve the investment of enterprises in innovation and R&D, and then enterprise performance.

Wang Xiaoting. Research on the relationship among supply chain concentration ratio, R&D investment and enterprise performance. Academic Journal of Business & Management (2023) Vol. 5, Issue 9: 95-102. https://doi.org/10.25236/AJBM.2023.050915.

[1] Guo Tongmei, Zhang Liang, Zhang Yue, Zhang Keyong, Miao Zixin. (2022). Supply chain concentration ratio, equity incentive and enterprise innovation--data from A-share listed enterprises from 2014 to 2019. Friends of Accounting, (07), 45-52.

[2] Zhang Yuhua, Zeng Hanquan. (2021). Research on the impact of supply chain concentration ratio on enterprise innovation investment—the moderating effect of marketization degree. Science and Technology Entrepreneurship Monthly, (34), 1-8.

[3] Wan Lingzhi. (2020). Property Right Nature and Enterprise R&D Investment, Jiangxi University of Finance and Economics, Nanchang, Jiangxi.

[4] Zhao Xiuyun, Bao Qun. (2014). Does the relationship between suppliers and customers affect the level of cash holdings of enterprises -- an empirical analysis based on panel data of listed manufacturing companies, Journal of Jiangxi University of Finance and Economics, (05), 41-48. 

[5] Ding Ning, Fan Lei. (2022). The impact of supply chain concentration ratio on R&D investment of manufacturing enterprises from the perspective of risk taking, Journal of Qiqihar University (Philosophy and Social Sciences Edition), (04), 76-81. 

[6] Schumpeter J. (2009). Theory of Economic Development, China Business Press.

[7] Li Lu, Zhang Wanting. (2013). Research on the Impact of R&D Investment on the Performance of Manufacturing Enterprises in China, Science and Technology Progress and Countermeasures, (30), 80-85. 

[8] Wang Dali. (2021). Research on the relationship between supply chain concentration ratio, R&D investment and enterprise performance, Liaoning University, Shenyang, Liaoning.

[9] Xu Chaoyang, Xu Guang, Li Ziyan, Zhao Xiaoyang. (2021). Supplier concentration ratio, Internal Control and R&D Investment. Friends of Accounting, (17), 35-42.