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# China restricts indium phosphide exports as AI chip demand surges
- URL: https://adjacent.media/signals/china-restricts-indium-phosphide-exports-as-ai-chip-demand-surges/
- Published: 2026-06-19T16:10:36.000Z
- Updated: 2026-06-19T16:10:36.000Z
- Description: China’s tightening export controls on indium phosphide—a critical material for high-speed semiconductor manufacturing—targets a supply chain chokepoint below the GPU and foundry competition: rare materials.
- Author: Jonathan Greene
- Tags: #signal, theme-connected, hardware, supply chain, semiconductor materials

Source: [The Next Web](https://thenextweb.com/news/china-tightens-indium-phosphide-checks-as-ai-demand-climbs?ref=adjacent.media)

China's tightening export controls on indium phosphide—a critical material for high-speed semiconductor manufacturing—targets a supply chain chokepoint below the GPU and foundry competition: rare materials. The move forces Western chip makers and AI companies to develop costly alternatives, secure long-term contracts at inflated prices, or accept dependency on Beijing's export licensing. Indium phosphide isn't easily substitutable in the gallium arsenide compounds needed for RF components and high-frequency processors used in data center interconnects and defense applications.