EU prepares diversification law to reshape global supply chains away from China

The European Commission is drafting a diversification law that would compel companies operating in the single market to limit their dependence on any single country for critical inputs. The measure, still in early preparation, represents the most direct attempt yet to translate the EU's 'de-risking' rhetoric into binding legal obligations. If adopted, it would mark a shift from voluntary corporate strategies to regulatory mandates, leveraging the EU's position as the world's largest combined trader to restructure global sourcing patterns.

How the Brussels Effect is changing

Legal scholar Anu Bradford coined the term 'Brussels Effect' to describe how EU regulations become global standards because foreign firms comply with EU rules rather than lose access to the single market. The General Data Protection Regulation and the Carbon Border Adjustment Mechanism are the canonical examples: non-European companies adjust their practices worldwide to meet EU requirements. The proposed diversification law operates differently. Instead of setting product or process standards that foreign producers must meet, it would constrain how European firms organise their own supply chains, where they buy, how much they source from each country, and which partners they qualify as sufficiently reliable.

This inward-facing mechanism matters because the EU absorbs 14.8% of China's total exports, roughly 20% of US exports, and serves as a primary market for ASEAN economies. That purchasing power gives Brussels leverage over corporate procurement decisions that no other jurisdiction can match. When the Commission signals that concentration risk is a regulatory concern, boardrooms from Munich to Milan adjust their sourcing strategies accordingly.

The critical minerals bottleneck

The immediate catalyst for the law is China's dominance in critical minerals. The EU sources approximately 96% of its magnesium imports from China, which also controls around 90% of global magnesium production. Similar concentration exists across rare earth elements, lithium processing, and other inputs essential for the green and digital transitions. Diversification is not merely a matter of signing new trade agreements; it requires developing alternative mining, refining, and processing capacity that currently does not exist at scale.

The International Energy Agency estimates that closing the gap in critical mineral supply chains alone would require US$23.6 trillion in additional investment over the next 25 years. That figure dwarfs the EU's existing industrial policy envelopes. The Critical Raw Materials Act, which entered into force in 2024, sets benchmarks for domestic extraction, processing, and recycling but does not compel companies to meet them. The diversification law would add teeth by making concentration limits legally enforceable.

Building a network of alternative partners

Over the past two years, the Commission has accelerated trade negotiations with what it calls 'middle powers', countries large enough to matter economically but not aligned with either the US or China in a way that creates new dependency risks. The EU, Indonesia Comprehensive Economic Partnership Agreement, the EU, India Free Trade Agreement, the EU, Australia FTA, and the EU, Mercosur Partnership Agreement all form part of this architecture. The IMF has noted that non-aligned 'connector' countries are capturing trade and investment spillovers from geoeconomic fragmentation, making them logical candidates for EU diversification.

For these partners, however, the opportunity comes with conditions. Capturing redirected European supply chains requires competitive manufacturing bases, skilled labour forces, and institutions capable of meeting the EU's expanding regulatory acquis, from the Corporate Sustainability Reporting Directive to the Corporate Sustainability Due Diligence Directive. The Commission has signalled it wants to avoid becoming a 'regulatory hegemon', but the practical effect of layering diversification requirements onto existing due diligence obligations may be to raise the bar further.

The cost of resilience

Diversification carries a price tag. Spreading sourcing across multiple suppliers typically means buying from second-best options on cost, quality, or lead times. European firms would absorb these costs through lower margins, higher prices, or both. In sectors where global competition is fierce, automotive, chemicals, machinery, even modest cost increases can erode market share. The alternative is public subsidy. Yet EU member states ran average budget deficits of 3.1% of GDP in 2024, exceeding the 3% ceiling in the Stability and Growth Pact. The IMF projects that three-quarters of European sovereigns face heightened debt sustainability risks over the medium term.

This fiscal squeeze creates a political dilemma. Governments can either fund the resilience agenda through industrial policy, effectively subsidising the cost of diversification, or accept that European industry becomes less competitive. Neither option is politically comfortable. The Commission's own competitiveness reports have warned that the EU's productivity growth lags behind the US and China, and that regulatory accumulation is a contributing factor. Adding a diversification mandate without a clear financing mechanism risks deepening that gap.

Legal design questions

The practical shape of the law remains undefined. One plausible mechanism would cap the share of any critical input that EU companies may source from a single country, for example, no more than 40% of a given mineral from one jurisdiction. Such a cap would need to be calibrated per sector, per input, and per timeframe, with transition periods for existing contracts. It would also require a monitoring and enforcement apparatus, likely building on the due diligence reporting infrastructure created by the CSDDD. Companies that exceed the caps could face fines, exclusion from public procurement, or restrictions on access to EU funding programmes.

The legal basis would almost certainly be Article 114 of the Treaty on the Functioning of the European Union, the internal market clause, which allows the EU to approximate national laws that distort competition. But member states have historically guarded their industrial policy prerogatives. A diversification law that effectively tells German chemical firms or French aerospace companies where to buy their raw materials will face intense scrutiny in the Council and the European Parliament.

Political sustainability

The deeper question is whether European publics and governments will sustain the strategy when costs materialise. The 'Brussels Effect' worked for data privacy and carbon pricing because the compliance costs were distributed across global value chains and the benefits, privacy rights, climate credibility, were politically salient. Resilience is harder to sell. Its benefits are probabilistic: you only notice them when a crisis hits. Its costs are immediate and visible in quarterly earnings and consumer prices.

Former EU foreign policy chief Josep Borrell once described Europe as a 'garden' surrounded by a 'jungle'. The diversification law is an attempt to redesign the garden so it no longer depends on the jungle for its most vital nutrients. Whether the gardeners are willing to pay for the redesign remains the open question. The Commission is expected to publish an impact assessment before the end of 2026, with a legislative proposal potentially following in 2027.