New U.S. measures that restrict exports to Huawei could cost Silicon Valley billions in lost revenue.
The world's biggest telecommunications equipment supplier and No. 2 smartphone seller relies on dozens of American tech companies for key components.
China's Huawei bought $70 billion worth of components and parts last year from 13,000 suppliers. Of that, about $11 billion was spent on products from dozens of U.S. businesses, including computer chips from Qualcomm and Broadcom, as well as...
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