In China’s modern economic system, e-commerce has become a crucial driver for the development of businesses and supply chains. To clarify the impact and mechanisms of e-commerce development on the competitiveness of corporate supply chains, this study conducts an empirical analysis using data from A-share listed companies between 2010 and 2022. The results indicate that: (1) The development of e-commerce significantly enhances the competitiveness of corporate supply chains, with results remaining robust after endogenous and robustness tests; (2) The level of e-commerce development can further promote the improvement of supply chain competitiveness by improving resource integration, alleviating financing constraints, and increasing R&D investment; (3) The effects of e-commerce development exhibit heterogeneity: in state-owned enterprises and firms with lower competition, the influence of e-commerce on supply chains is more significant; in regions with high-speed rail (HSR) connectivity, e-commerce not only stabilizes customer relationships but also promotes corporate innovation, whereas in areas without HSR, e-commerce development may significantly mitigate issues related to capital occupation. The core innovation of this paper lies in the construction of a “e-commerce—resource integration/financing constraints/innovation investment—supply chain competitiveness” three-dimensional driving framework, establishing a multi-indicator evaluation system, and conducting heterogeneity and mechanism analyses from multiple perspectives. This provides systematic empirical evidence for the role of e-commerce in enhancing supply chain resilience and competitive advantage, offering policy recommendations for businesses to effectively improve their competitiveness.

Sanitary and product manufacturing companies' care in Indonesia is increasingly challenging to carry out production due to limitations caused by the lockdown during the pandemic. The conditions demanded very high and required fast distribution mobility. The company maintains product quality by established standards according to specifications, but the production process time is limited. To maintain product quality, companies must retain supply chain quality integration and innovation quality integration to support Operational Performance. The research uses manufacturing companies focusing on plastic companies with bottle and tube production related to supply packaging health protocol products. Analysis to answer the research hypothesis uses the software SmartPLS. The study results found that internal supply chain quality integration by integrated manufacturing processes positively and significantly affects supplier and customer quality integration. Supply chain integration, which consists of supplier quality integration, internal quality integration, and customer quality integration, impacts increasing product innovation and the number of new products. Supply chain quality integration and innovation quality integration directly influence operation performance. This research enlightens company managers on improving internal capabilities and establishing synergy with suppliers and customers to create innovation, aiming to increase operational performance to compete with the global market and face market fluctuations. Research makes a theoretical contribution to quality development and supply chain integration.