- Supply squeeze. Chinese suppliers have refused to ship critical materials including yttrium, terbium, and gallium to US companies since early August, keeping prices near record highs and cutting US-bound yttrium exports to roughly half their 2024 levels.
- RBA trigger. The immediate cause was China’s decision to sanction the Responsible Business Alliance in August, a US supply chain monitor whose compliance framework made Chinese firms nervous about drawing Beijing’s ire.
- Diplomatic context. The problem has reached the US government’s pre-summit planning agenda ahead of President Xi Jinping’s scheduled Washington visit on September 24.
A cluster of Chinese rare earth suppliers have declined to ship materials to US customers since early August, when Beijing sanctioned the Responsible Business Alliance (RBA), a US-based supply chain monitor. The suppliers feared that complying with the RBA’s affiliated Responsible Minerals Initiative due diligence framework could expose them to punishment from Beijing for cooperating with a sanctioned entity, according to reporting by Reuters cited across multiple outlets including Yahoo Finance.
What Is Being Withheld
The affected materials — yttrium, terbium, gallium, indium phosphide, and tungsten — are used in aerospace components, chipmaking, medical devices, and energy infrastructure. US imports of yttrium from China are “still only about half 2024 levels,” according to the Reuters report, while Japan has faced steeper restrictions, including a near-complete halt on terbium shipments. Prices for these elements remain near record highs. “China has been very effective in using rare earth export controls to impose restraint on the Commerce Department,” Reva Goujon, geopolitical strategist at Rhodium Group, told Reuters. Some suppliers have also cited concerns that materials could inadvertently reach US entities subject to China’s own sanctions, adding a second layer of caution beyond the RBA issue.
The Diplomatic Angle
The persistence of the shipping freeze has landed on the US government’s planning agenda ahead of Xi’s September 24 Washington visit — a development that signals the issue has escalated beyond a routine trade dispute into summit-level bargaining territory. The constraints have not triggered a formal US countermeasure, leaving American chipmakers and defence contractors managing spot purchases at elevated cost.
The halt illustrates how Beijing deploys economic leverage without direct confrontation. Unlike tariffs or explicit export bans, a supplier-level refusal to ship leaves Washington few clean retaliatory options: the decision technically belongs to private firms responding to regulatory uncertainty, not to a ministry directive that can be challenged at the WTO. That ambiguity is precisely the point.