Taiwan joined a yearslong US campaign to curtail China’s technological ascent when it blacklisted the country’s AI and chipmaking champions, an unprecedented step that may signal a resurgent effort to isolate its powerful neighbor’s semiconductor sector.

The International Trade Administration of Taiwan added Huawei and SMIC to its "Strategic High-Tech Commodities Entity List," including a host of their subsidiaries. Huawei and SMIC, two of China's leading semiconductor companies,

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