Surfex is a term that can refer to different things depending on the context, but it is commonly associated with a type of surfactant or surface-active agent used in various industrial applications. In the context of cleaning products, Surfex may denote a brand or specific formulation designed to enhance cleaning efficiency by reducing surface tension. Additionally, Surfex can also refer to a range of products or systems related to surface engineering or treatments. Always check the specific context for more precise information.