To achieve meaningful results in an industry analysis, it is to clearly define the industry under consideration . Industry codes (in Germany: WZ codes, internationally: NACE codes) can be used for this purpose. Especially in the industrial sector, additional definition criteria are often necessary because the existing industry codes are too broadly structured. In most cases, it is also useful to divide the industry into sub-segments and evaluate these sub-segments in a differentiated manner based on their characteristics. Segmentation criteria include product characteristics, regional subdivisions, or price/performance classes.