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Security
Design
5G
(Bloomberg) -- Huawei Technologies Co. quietly spent months racing to stockpile critical radio chips ahead of Trump administration sanctions, ensuring it can keep supplying Chinese carriers in their $170 billion rollout of 5G technology through at least 2021.Partner Taiwan Semiconductor Manufacturing Co. began ramping up output in late 2019 of Huawei’s 7-nanometer Tiangang communications chips, the most crucial element in 5G base stations, people familiar with the matter said. The Taiwanese contract manufacturer eventually shipped more than 2 million units at Huawei’s behest ahead of the sanctions cutoff last month, one of the people said, asking not be identified discussing internal matters. The sheer magnitude of orders at one point got TSMC executives wondering whether they had underestimated global demand, the person said.Huawei’s breakthrough in securing essential supplies underscores the mixed success of a U.S. campaign against China’s largest tech company since 2018. Citing national security concerns, the White House started by trying to curtail the sale of American software and circuitry to Huawei before finally enacting sweeping restrictions against its suppliers including TSMC. It’s that last salvo, a ban on the sale of ready-made, commercially available semiconductors, that finally knee-capped Huawei’s smartphone business and forced it to curtail device production, the people said. Representatives for Huawei and TSMC declined to comment.But the Tiangang chip, desig
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