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Deepening Huawei Curbs Send Asian Chipmakers Plunging

  • Mediatek among the semiconductor firms that headed south
  • The broader sanctions on Huawei threaten wider industry impact
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Photographer: Isabel Infantes/AFP via Getty Images

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Taiwan’s MediaTek Inc. led a slump among major chipmakers after the Trump administration tightened restrictions on Huawei Technologies Co., expanding a campaign to cripple China’s largest tech corporation.

The rules announced Monday build on restrictions announced in May and add 38 Huawei affiliates in 21 countries to an economic blacklist. All chip companies working for Huawei will be subject to licensing regardless of where they are, an official said, adding that even foreign companies will be affected as long as they use American design software or equipment.