2026-10-15T05:21:25Z https://www.scidb.cn/oai

10.57760/sciencedb.j00289.00449 2026-08-03T11:31:33Z

2026-08-03 The Co-movement Effect of Key Digital Technology Substantive Innovation in the Supply Chain doi:10.57760/sciencedb.j00289.00449 en This study uses data on the top five customers and suppliers of A-share listed companies in China from 2007 to 2020 as its research sample. The listed company and supply chain data are sourced from the CSMAR database, while the original patent data come from the National Intellectual Property Administration's patent database. The initial data were processed as follows: based on the "Classification System for Key Digital Technology Patents (2023)" issued by the National Intellectual Property Administration, IPC codes corresponding to each technological category were identified and matched with the "main classification number" variable in the original patent data to determine patents related to key digital technologies. Subsequently, using the "applicant" variable, patent data were linked to the firm level, enabling the identification of patent information associated with focal firms and their upstream and downstream partners. During data cleaning, ST and ST* firms during the sample period were excluded, as were observations with missing key variables or those where supplier or customer names were too ambiguous to identify specific enterprises. To mitigate the influence of extreme values, a 1% winsorization was applied to continuous variables. Ultimately, the dataset comprises 50,233 observations covering the period 2007–2020 at the "focal firm–supplier (customer)–year" level, involving 1,881 focal firms. digital technologies; supply chain co-movement effect; substantive innovation; SOR framework; ecological niche theory Shang Hui yang ying Tian Xinru RESTRICTED dataset Science Data Bank