An Evaluation to the Global Supply Chain Security Evidence from China’s High-End Manufacturing Sector

The globalization of supply chain in manufacturing sector stems from the global division of labor. Despite significant focus on global supply chain security, there remains a deficiency of quantitative research in this area. This study develops an evaluation index method for global supply chain security, including external dependence and market concentration. The study utilizes the established index to assess the global supply chain security for China’s high-end manufacturing sector. The dependence of China’s high-end manufacturing sector on the international market originally increased and then decreased, with the fall becoming more significant. The high-end manufacturing sector in China demonstrates significant market concentration in both upstream and downstream activities. Furthermore, the eight economies with the most substantial import and export volumes retain a stable status. The global supply chain security coefficient of China’s high-end manufacturing sector initially increased and then subsequently declined from 2007 to 2022. In 2022, the security coefficient increased by 4.57% relative to 2007; yet, it was still inferior to that of China’s low-end manufacturing sector. There are considerable disparities among China’s seven high-end manufacturing sectors. This study reveals a notable finding: the downstream dependence and market concentration in China’s high-end manufacturing sector exceed those in the upstream.