PANews reported on October 26 that according to The Information, the U.S. Department of Commerce launched an investigation into TSMC earlier this month to confirm whether it provided chips to Huawei. Subsequently, 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 stated that it used U.S. technology in the chip manufacturing process and stated that it would comply with U.S. laws.

Earlier news said that semiconductor research company TechInsights claimed that after dismantling Huawei's current most advanced artificial intelligence (AI) accelerator chip Ascend 910B, it was found that this chip may be manufactured by TSMC, which also means that TSMC may have violated US export controls.