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China AI hardware stocks slump after news US plans to ban imports of Chinese components

By Thomson Reuters Aug 4, 2026 | 8:42 PM

SHANGHAI, Aug 5 (Reuters) – China’s artificial intelligence hardware stocks slumped on Wednesday after news ​that the Trump administration ‌is drafting a ban on U.S. imports of new models of Chinese data centre components.

The CSI300 Telecommunication ‌Services ​Index tumbled 6% ⁠in early trading.

Export-dependent ⁠data centre component makers including Zhongji Innolight, Eoptolink Technology and Suzhou TFC Optical Communications all ​opened sharply lower.

The U.S. government is working on ⁠a measure to ⁠bar imports of new ​Chinese optical transceivers, which allow data ​to travel over fibre-optic cables ‌at the speed of light within data centres, Reuters reported.

The news threatens to hit ⁠already shaky confidence in China’s AI hardware stocks after a savage sell-off.

Zhongji Innolight ⁠shares ‌fell roughly 8% ⁠in both Shanghai and ​Hong ‌Kong in early trading. ​The Chinese ⁠optical parts maker generated 62% of its revenue from the U.S. in the first quarter.

(Reporting by Shanghai Newsroom; Editing by ​Tom Hogue)