China Export Curbs on 10 US Firms Disrupt Rare Earth Supply Chains

Supply chain managers face a new shock as China weaponizes its rare earth dominance. By targeting US miners MP Materials and USA Rare Earth—along with defense primes—the export ban directly threatens the flow of processed rare earths essential for everything from precision munitions to electric vehicle motors, underscoring just how dependent Western supply chains remain on Chinese processing capacity.

China imposed sweeping export controls on 10 US companies on June 22, 2026, in a direct retaliation for Washington's expansion of its 'Chinese military enterprise' blacklist. The announcement by China’s Ministry of Commerce targets firms spanning defense and rare earths mining, including Aveox (a key aerospace defense supplier), Oshkosh Defense (military vehicle manufacturer), MP Materials (the only US rare earths miner), and USA Rare Earth. Reports from the Economic Times indicate that major defense prime contractors Lockheed Martin, Raytheon, and Boeing are also on the list, underscoring a deliberate strike at America’s most critical military-industrial players. The move follows a brief diplomatic thaw in May when US President Donald Trump visited Beijing, where he and Xi Jinping agreed to work on tariff reductions. That détente collapsed after the US released a new blacklist in early June, adding 80 Chinese entities—including tech giants Alibaba and Baidu, and EV leader BYD—to a list that designates them as aiding the Chinese military. Beijing had vowed retaliation, and Monday’s action delivers it with high symbolism and practical bite.

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Rare earths are the hidden linchpin, as China dominates not just mining but, more critically, processing—controlling roughly 60% of global mining output and approximately 85% of processing capacity.

The Chinese ministry declared that exporters are prohibited from providing dual‑use items to the listed entities and that ‘any relevant export activities currently underway must cease immediately.’ Crucially, the government also imposed a ban on public procurement from these firms, cutting off a lucrative revenue stream from Chinese government contracts. This dual‑pronged measure—an export ban combined with a procurement blackout—raises the stakes in a tit‑for‑tat economic war that has already disrupted global technology and defense supply chains. Dual‑use items are broadly defined and can include advanced materials, precision machinery, electronic components, and software with both civilian and military applications. For a company like Aveox, which holds contracts for US military aerospace programs, such a ban could interrupt the flow of specialty alloys, rare earth magnets, or testing equipment sourced from China. For Oshkosh Defense, it might affect the procurement of vehicle electronics or armor‑grade materials. Rare earths are the hidden linchpin, as China dominates not just mining but, more critically, processing—controlling roughly 60% of global mining output and approximately 85% of processing capacity. MP Materials, which operates the Mountain Pass mine in California and is the primary US rare earths producer, has been actively expanding downstream processing capabilities precisely to break China’s chokehold. The export ban threatens that project by cutting off access to Chinese‑made equipment, reagents, or even technical expertise that could be considered dual‑use.