Shares in Chinese AI darlings slide on US ban fears
Washington's next export control targets the unsexy backbone of AI: optical transceivers. Two Chinese chipmakers just lost $3B in market cap on the rumor.

Why it matters
The US is tightening the supply chain screws on China's AI buildout—this time at the data-center networking layer, not just GPUs. Optical transceivers are critical for AI cluster interconnect; a ban would force Chinese labs to source domestically or face latency/cost penalties.
The key facts
5 to knowZhongji Innolight and Eoptolink shares sliding on US ban report
Washington drafting ban on optical transceivers
Optical transceivers are critical AI cluster interconnect hardware
Export control expanding beyond GPUs to networking layer
Chinese AI buildout supply chain vulnerability exposed
Go to the source
Financial Times Technologyft.com
Publisher excerpt: Zhongji Innolight and Eoptolink hit by report that Washington is drafting ban on optical transceivers