关键词: 公共数据开放, 产业链供应链, 数字化转型, 绿色低碳转型, 政策推广效应

Abstract: This study selects A-share listed companies on the Shanghai and Shenzhen stock exchanges from 2011 to 2022 as the observational samples. By using the launch of government public data platforms as a quasi-natural experiment, the research employs a difference-in-differences model to systematically analyze the impact and mechanisms of public data openness on resilience and security of the industrial and supply chains. The research findings reveal that public data openness significantly enhances resilience and security of these chains across various specifications and the findings remain true after robustness tests. Public data openness plays its role through three pathways: enterprise information transparency, digital transformation, and green and low-carbon transformation. Heterogeneity analysis indicates that companies with stronger risk resistance, companies in industries with higher ecological complexity, and development-oriented companies in their mature stage benefit more from the policy. Additionally, the policy pilot exhibits asymmetry within the horizontal structure of industrial and supply chains. Accordingly, it is highly recommended to improve the efficiency of public data utilization and enhance resilience and security of the industrial and supply chains by improving data institutions, promoting green digital transformation, implementing targeted support, and fostering cross-regional and cross-sector collaboration.

Key words: Public Data Openness, Industrial and Supply Chains, Digital Transformation, Green and Low-carbon Transition, Policy Spillover Effects