This paper analyzed the difference between the profit structure and inventory situation existing among the companies that make up the supply chain in the automobile industry and the electronic equipment industry, and the degree of financial margin that these companies have was evaluated by the R & D expenses. Based on this result, this study attempted to find for the characteristics of industries and companies from the viewpoint of upstream companies and downstream companies in the supply chain. It turned out that the characteristics are different between the automobile industry and the electronic equipment industry, reflecting the difference in the industrial structure. For statistical analysis, the Games-Howell method in ANOVA and cluster analysis were used.
