The U.S. Department of Commerce launched an investigation into TSMC earlier this month to confirm whether it supplied chips to Huawei, after which TSMC stopped supplying chips to Sophgo, an artificial intelligence company affiliated with Bitmain. According to two people familiar with the matter, TSMC has cut off the supply of chips to related companies. Since 2020, Huawei has been banned from purchasing chips made using U.S. technology, including chips produced by TSMC. TSMC said it used U.S. technology in the chip manufacturing process and said it would comply with U.S. law. Earlier, it was reported that semiconductor research company TechInsights claimed that after disassembling Huawei's current most advanced artificial intelligence (AI) accelerator chip Ascend 910B, it was found that the chip may have been manufactured by TSMC, which also means that TSMC may have violated U.S. export controls. (The Information)