Throughout the wafer fabrication process, it is crucial to remove any particles or contaminants that could lead to defects. This is achieved through various wet and dry cleaning processes. While specific leading suppliers are not prominently featured in the snippets, Modutek in the USA and Daitron, with operations in both Japan and the USA, are identified as potential suppliers of wafer cleaning equipment. Other suppliers are also located in South Korea and China. The presence of companies from the USA and Japan in this essential equipment category suggests a foundational capability within these established semiconductor manufacturing hubs to address the critical need for contamination control.