By using inferior chemical raw materials, thousands of wafers in a semiconductor factory have become unusable by the world's largest contract manufacturer TSMC. This could also affect chip manufacturing for customers such as Huawei and Nvidia.
TSMC has confirmed the use of "out of spec" chemicals and stated in a statement that this will affect production yield. The Chinese news website ETtoday mentioned (it's a google translation though) that more than ten thousand wafers are affected and production came to a halt. The Fab 14 in the south of Taiwan produces 12-inch wafers (300 mm). The classification as "Gigafab" means that more than 100,000 wafers are produced per month. According to other reports, it is feared that chip production could be impacted by major customers such as Nvidia (graphics chips), Huawei and MediaTek (smartphone SoCs), which manufacture their products at 12 nm and 16 nm at TSMC.