Why China’s graphite export adjustment will affect the global industrial chain: a test involving critical minerals, value chain position, and supply chain resilience

In today’s world, where global supply chains increasingly emphasize “security, substitutability, and traceability,” graphite is no longer just a niche category in the materials market. It is more like a lens through which to observe the fragility of modern industrial systems: upstream resource concentration, cross-border processing links, downstream manufacturing dependence, and changes in export policy all ultimately transmit through the same network.

A modeling study published in *Humanities and Social Sciences Communications*, using China as a case study, simulated the impact of graphite export adjustments on the global graphite value chain. The focus of the study is not simply “who will buy less graphite,” but a deeper question: when the export conditions of a key intermediate good change, how do the effects pass through trade networks, production networks, and value-chain specialization, ultimately altering the positions of different economies within the global industrial system?

Such issues are highly significant in the current global trade environment. Over the past decade and more, the central contradiction in world trade has shifted from mere commodity exchange to control over supply chains, the distribution of processing capacity, and the availability of critical inputs. Graphite sits precisely at this intersection of change: it is both a raw material and a processed material; it serves traditional industries and also enters new-energy and high-end manufacturing chains. For this reason, the signals released by its trade fluctuations often extend far beyond the category itself.

The study used multilayer trade networks, input-output analysis, and cascade-spread simulations to break graphite down into different production stages for observation, including raw materials, primary products, and deep-processed products. This framework is important because the risks in modern supply chains are never linear. A country’s dependence on a certain type of upstream material may, through smelting, processing, transformation, and re-export, be transmitted to another country’s manufacturing export performance. In other words, true vulnerability is not only reflected in “how much is imported,” but in “whether it has been embedded in a chain with very low substitutability.”

According to the study’s findings, in the graphite industry, high-value-added deep-processed products often correspond to stronger industrial competitiveness and greater value-capture capability. China maintained the largest export value in graphite trade and generated the highest total value added across the industry, reflecting that it is not only a supplier of resources, but also a deep processor and organizer of value chains. By contrast, some economies hold advantages in high-end processing stages and can improve their position in the value chain through advanced refining. The study specifically notes that Spain, France, and India performed strongly in deep-processed graphite products, indicating that the global graphite system is not only a competition at the resource end; processing capacity also determines the final distribution of gains.This is also one of the key changes in current global industrial policy: the strategic importance of bulk resources no longer comes only from reserves, but from whether they can be turned into intermediates that the industrial system can continuously absorb. In the graphite chain, the difference between raw material exporting countries and processing exporting countries is in fact a difference in their position in the value chain. The former are more easily affected by price volatility and policy shocks, while the latter are more likely to gain bargaining power within the global manufacturing system.

More importantly, the study shows that the impact of export adjustments does not stop at direct trade partners. Cascade simulations indicate that when China reduces graphite raw material exports, trade activity in South Korea, Japan, and the United States declines significantly; when raw material exports are reduced by 10%, the decline in U.S. graphite exports reaches 26.4%. This result shows that trade shocks in critical minerals are not transmitted “point to point,” but spread along transnational production chains. In other words, an apparently local export change may affect another country’s re-exporting, processing, and end-manufacturing capacity through multiple intermediary links.

This is especially important for international logistics and supply chain management. When assessing risk, companies often focus only on direct suppliers, but true systemic risk is often hidden in the suppliers of suppliers, and the processors of processors. The graphite case once again shows that the resilience of modern manufacturing does not depend on whether there is a single substitute source, but on whether sufficient intermediate product networks, inventory buffers, and processing substitution pathways are in place. Without these capabilities, changes at any critical node can be amplified.

The study also finds that even if some countries are not the largest direct importers of China’s graphite raw materials, they may still be heavily affected due to network transmission. Germany is a typical example. This phenomenon suggests that global trade is increasingly like a “multilayer coupled system”: direct trade flows are only the surface layer, while the deeper network connections are what truly determine outcomes. For manufacturing in Europe, East Asia, and North America, this means supply chain risk assessment must move beyond the traditional bilateral trade framework and be upgraded to a systemic assessment across layers, industries, and regions.

These changes also explain why critical minerals are becoming one of the central issues in trade policy. In the past, trade policy was more focused on tariffs, quotas, and market access; now, it increasingly involves resource security, industrial security, and control over technological pathways. Graphite is important because it sits at the intersection of new energy batteries, advanced materials, and high-end manufacturing. Any change in export policy may simultaneously affect raw material procurement, processing arrangements, inventory strategies, and the layout of end-use production capacity on different time scales.

From the perspective of globalization, this means that the era of “efficiency first” is giving way to a new stage in which efficiency and security are equally emphasized. Companies are not abandoning global allocation; rather, they are redefining its logic: in the past, the focus was on the lowest cost and shortest path, whereas now there is greater emphasis on multi-node backups, regionalized division of labor, and controllable political risk. Materials like graphite, which are deeply embedded in the industrial system, are becoming a typical example of this restructuring.The study also reminds us that export adjustments are not more effective simply by becoming stronger. The model results show that such measures are only effective within a certain range; excessive contraction does not necessarily bring the expected strategic gains. This conclusion has practical significance for policymakers: critical mineral policy is not a one-dimensional “chokepoint management” issue, but rather one of finding a balance among industrial gains, international responses, and long-term market relationships. If handled improperly, short-term shocks may instead spur substitute investment, supply-chain relocation, and the outward migration of processing capacity.

This is precisely the deep change now taking place in the global trade system: the flow of resources is no longer just a matter of resources themselves, but of industrial control, network position, and mechanisms of value distribution. The reason changes in the graphite market are worth attention is not that it is the largest in scale, but that it most clearly illustrates one fact—that in the latest round of global supply-chain restructuring, what truly matters is not who owns the material, but who can stably organize, process, and embed that material into the global manufacturing network.

In other words, the changes in graphite exports reflect not a trade disturbance in a single commodity, but a process in which global industrial chains are moving from “broad globalisation” toward “networked regional division of labour.” In this process, ports, shipping, processing bases, technical standards, and trade policies together determine where value ultimately flows. For companies, this means a need to reassess lists of critical inputs; for policymakers, it means resource security and industrial upgrading can no longer be discussed separately; for the global trade system, it means future competition is increasingly taking place in intermediate goods and network nodes, rather than only in end markets.