History into the modern industrial society, the metal - hardware products industry is a rapid development, the hardware industry has played an invaluable role in the development of the national economy, hardware products have become an industrial sector indispensable an industrial sector.
　　Instead, it is used as an accessory product for industrial manufacturing, a semi-finished product, a tool used in a production process, and the like. Only a small part of daily hardware products are the necessary consumer goods for people's lives.
　　In the national statistical industry classification of the National Bureau of Statistics, manufacturing industry is ranked in the third largest category of industries. Including: production and manufacturing of living materials, such as: agricultural and sideline products, food and beverages, tobacco, textile and garment leather, wood furniture, printing and cultural and sports goods and pharmaceutical manufacturing, etc.; production of manufacturing materials, such as: petrochemical, chemical fiber, rubber and plastics , non-metallic products manufacturing, metal smelting and processing, metal products manufacturing, general equipment manufacturing, industry-specific equipment manufacturing, and transportation equipment manufacturing, electrical equipment, communications and electronics.
　　The related products in the classification of metal parts in manufacturing and general parts and components in general equipment manufacturing form the “hardware” in the usual sense. This shows that 'hardware' is not an existing industry category, but the intersection of these several metal products - hardware products. In the entire manufacturing industry, the responsibility of 'hardware' is to provide manufacturing companies with spare parts and production tools, rather than as an end-use industry-specific equipment. In spite of this, we cannot deny that "hardware" plays an important role in the social production process: "hardware" and the manufacturing industry are inseparably integrated with each other.