To obtain meaningful results from industry analysis in the industrial sector, a clear definition of the industry under consideration particularly important. Industry codes (in Germany: WZ codes, internationally: NACE codes) can be used for this purpose. Especially in the industrial sector, further delimitation criteria are often necessary, as the existing industry codes are too broadly structured. In most cases, it is also advisable to divide the industry into sub-segments and evaluate these segments differently with regard to their characteristics. Segmentation criteria include, for example, product characteristics, regional divisions, or price/performance categories.