Generalization of industry classification
Industry classification can explain the development stage of the industry itself and its position in the national economy. The development of industry will inevitably follow the low-level predatory exploitation and utilization of natural resources and low-level labor export, and gradually turn to scale economy, technology-intensive, financial-intensive, talent-intensive and knowledge-based economy, and gradually turn from exporting natural resources to exporting industrial products, intellectual property rights and high-tech talents.
Generally speaking, industry classification is a detailed division of the organizational structure system of units or individuals engaged in national economic production and operation according to certain scientific basis, such as forestry, automobile industry, banking and so on. Social division of labor is the basis of occupational classification. In every link of the division of labor system, labor objects, labor tools and labor expenditure forms have their own particularity, which determines the differences among various occupations.