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TSMC on Thursday disclosed that it will have to delay mass production at its Fab 21 in Arizona to 2025, as a lack of suitably skilled workers is slowing down the installation of cleanroom tools. The company also confirmed that it is sending in hundreds of people familiar with its fabs from Taiwan to Arizona to assist the installation. "We are encountering certain challenges, as there is an insufficient amount of skilled workers with the specialized expertise required for equipment installation in a semiconductor-grade facility," said Mark Liu, chairman of TSMC, during the company's earnings call with financial analysts and investors. "While we are working on to improve the situation, including sending experienced technicians from Taiwan to train local skill workers for a short period...