TSMC foundry.
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At present, Huawei is only the designed Kirin chip, and for the complete Kirin zero chip, Huawei is currently unable to develop. The CPU core of the Kirin series chip is based on the ARM architecture, and the architecture of this baseband chip is indeed developed by itself. Therefore, to a certain extent, for the Kirin chip, Huawei is only involved in the design, and the overall research needs to be completed by multiple industrial chains.
How is Huawei's domestic chip made?