Interesting - maybe part of the deal:
China imposed tight controls on indium phosphide (InP) exports in February 2025 (a key material for high-speed optical transceivers in AI/datacenter photonics). Permits were very limited through 2025, creating a major bottleneck for companies like Coherent, Lumentum, AXT, and Taiwanese players (VPEC, etc.).
The issue was explicitly raised in pre-summit talks (including by Coherent’s CEO traveling with the U.S. delegation) and during the Trump-Xi meetings.
reuters.com
China approved a fresh batch (~4,000 substrates) for export at the end of May 2026 — the first notable 2026 release after a smaller 2025 one. This came shortly after the summit and helped ease immediate pressure on AI supply chains.
digitimes.com