The United States is tightening restrictions on foreign chipmakers in China, revoking special authorizations that had allowed South Korea's Samsung and SK Hynix to access American semiconductor manufacturing equipment, according to a Federal Register notice.

The move ends exemptions the Commerce Department granted in 2022 when it imposed sweeping limits on U.S. technology sales to China. Without those authorizations, the companies will now need licenses to obtain U.S. equipment for their Chinese operations. Intel also appeared on the list of firms losing authorization, though it sold its Dalian facility in China earlier this year.

The Commerce Department said it would approve licenses to ensure companies can continue operating existing facilities but will not authorize expansions or tech

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