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One of the sources said that Washington introduced the annual approval system for exports of chipmaking tools to China.
Samsung and SK Hynix declined to comment while TSMC did not immediately respond to requests for comment. The U.S. Department of Commerce was not immediately available for comment outside business hours.
Keen to limit China’s access to advanced American technology, U.S. President Donald Trump’s administration has been re-examining export controls that it thought were too relaxed under the Biden administration.
South Korea’s Samsung Electronics, the world’s top memory chipmaker, and second-ranked SK Hynix count China as one of their key production bases especially for traditional memory chips, whose prices have been surging due to demand from AI data centers and tightened supplies.
Reporting by Hyunjoo Jin; Additional reporting by Wen-Yee Lee and Heekyong Yang; Editing by Jacqueline Wong and Saad Sayeed
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