Highlights

• Japan and France signed a rare earth cooperation roadmap focused on dysprosium (Dy) and terbium (Tb), anchored by France’s Caremag facility launching in late 2026 to supply 20% of Japan’s Dy/Tb needs—challenging China’s ~90% processing dominance.
• Malaysia is positioning as the critical hinge, hosting Lynas processing, courting foreign partnerships with Carester for technology transfer, and leveraging 16.1 million tonnes of heavy rare earth deposits while maintaining export bans on raw materials.
• The first scalable ex-China heavy rare earth supply chain may emerge through this allied Japan–France–Malaysia corridor rather than U.S. domestic efforts, with permitting, governance, and late‑2026 Caremag commissioning as key milestones to watch.

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Could a viable rare earth element supply-chain triangle be forming in plain sight? Japan needs magnet‑grade heavy rare earth elements, France is building a refining hub, and Malaysia is trying to climb from “dig-and-ship” into proper processing. The prize is not a mine. It is the midstream, because China accounts for about 90% of the world’s processed rare earth production. 

Japan and France have signed a roadmap (opens in a new tab)for cooperation (opens in a new tab) on rare‑earth supply chains, specifically focused on dysprosium and terbium. The anchor is Caremag in Lacq (opens in a new tab), expected to start in late 2026; Japan says it aims to source about 20% of its future Dy/Tb needs from it.  The Europeans and Japanese are beating the Americans.

Japan’s long game: keep magnet factories fed

Japan’s strategy is older than today’s news cycle. In 2011, JOGMEC and Sojitz backed Lynas with $250 million (opens in a new tab) in loan‑and‑equity financing tied to long‑term supply for Japanese customers—offtake first, mine second. Reuters reports Japan has since reduced its reliance on China from about 90% to about 60% after the 2010 shock. 

That matters because Japan has the downstream muscle: high‑performance NdFeB magnet manufacturing that can absorb qualified Dy/Tb and turn it into a product. 

France’s chemistry bet gets teeth

Carester’s Caremag project has €216 million in financing (opens in a new tab) (Japanese partners plus the French state) and plans rare‑earth oxides mainly from recycled magnets, with mining concentrates also intended. 

The missing Western step—metal and alloy making—is being built next door: Less Common Metals, now tied to USA Rare Earth, has announced a 3,750‑mtpa metal‑and‑alloy facility co‑located in Lacq with Caremag. 

Malaysia: Hinge and Hazard

Malaysia hosts Lynas’ major processing footprint and has been preparing separated heavy rare‑earth output at Kuantan.  The Southeast Asian nation is also tightening the rules of the game. Rare Earth Exchanges has reported that Malaysia will maintain a ban on exporting raw rare earths and is courting foreign partners because it lacks mining and processing technology despite sizable deposits.

Reuters reported at the start of the year that Malaco Mining Sdn. Bhd (opens in a new tab) (Malaco) has a pilot‑stage tie‑up with Carester (opens in a new tab), the latter of which could add a Malaysia-based separation lane with technology transfer, environmental‑compliance focus, and stated Japanese interest. 

This project aims to exploit Malaysia's 16.1 million tonnes of deposits, developing local capacity for mining and refining (separating) rare earths for magnets and EVs. The southeast Asian nation is know for its rich ionic clays and heavy rare earth feedstock.

But Moving Parts

Permitting and trust are the choke points. Yes, Malaysia has regulatory hurdles and environmental sensitivity, plus suspensions that show how fast a social license can evaporate. Malaysia has also explored processing talks with China (opens in a new tab)—proof that “ex‑China” is a spectrum, not a switch.  But as Rare Earth Exchanges™ has reported, interest in Malaysia is growing, with upstarts such as DTEC and others in discussions there.

Investor Takeaway

If this corridor holds, could it become the first scalable, heavy-rare-earth-ready ex‑China chain with buyers, financing, and midstream capacity aligned?  A reminder that “U.S. supply security” may arrive first through allied platforms, not necessarily domestically—despite now well over a billion dollars of taxpayer-related money made available (of course serious milestones are involved).

Track late‑2026 Caremag commissioning, the Lacq metals/alloys build‑out, and the potential of Malaysia, and regulatory credibility—because governance can be the bottleneck.