Chinese AI Optical Stocks Fall on Report of Potential U.S. Component Ban

Chinese stocks specializing in optical components for artificial intelligence hardware declined sharply on Wednesday following a report that the U.S. is considering a ban on new data center components from China. The potential restrictions, aimed at mitigating national security risks, have sparked investor concern over fresh trade tensions.

Optical Component Stocks Tumble

Shares of several key suppliers to the AI industry saw significant losses in Wednesday trading. The sell-off was led by optical components maker Zhongji Innolight (SZ:300308, HK:3308), whose shares fell by approximately 10% in both Shenzhen and Hong Kong.

Other notable decliners included:

• Eoptolink Technology (SZ:300502), which dropped more than 7%.
• Suzhou TFC Optical Communication Co (SZ:300394), which fell 3.5%.

The market reaction reflects investor anxiety about the potential impact on Chinese exporters with significant exposure to the U.S. market.

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U.S. Weighs New Restrictions

The market downturn followed a Reuters report on Tuesday stating that the U.S. Federal Communications Commission (FCC) is drafting rules to prohibit imports of new Chinese optical transceivers. These components are critical for moving data at high speeds through fiber-optic cables inside data centers.

According to the report, U.S. officials aim to publish the measure this year. However, the report also noted that the proposal could still be modified or shelved before being finalized.

National Security Rationale

The proposed import restrictions are reportedly intended to address security vulnerabilities associated with the build-out of AI infrastructure. Reuters reported that the measures aim to reduce risks such as potential data theft, malware, and service disruptions from components integrated into U.S. data centers.