Manufacturing Industry refers to a new product after physical or chemical changes, whether it is made by power machinery or by hand; Whether the product is sold wholesale or retail, it is regarded as manufacturing. The production of various parts of finished products in buildings should be regarded as manufacturing. However, in the construction site of prefabricated products, the assembly activities of the main components into bridges, warehouse equipment, railways and elevated highways, elevators and elevators, pipeline equipment, water spraying equipment, heating equipment, ventilation equipment and air conditioning equipment, lighting and installation of wires, as well as the installations of buildings are all listed as construction activities. In enterprises (units) mainly engaged in product manufacturing, the assembly and installation activities of machinery and equipment for product sales should be classified according to their main activities. These industries include: 0 1 agricultural and sideline food processing industry 02 food manufacturing industry 03 beverage manufacturing industry 04 tobacco products industry 05 textile industry 06 textile clothing, shoes and hats manufacturing industry 07 leather, fur, feather (velvet) and its products industry 08 wood processing and wood, bamboo, rattan, brown and grass products industry 09 furniture manufacturing industry 10 paper and paper products industry/ Kloc-0/ 1 Reproduction of Printing Industry and Recording Media 12 Manufacturing of Cultural and Sports Goods 13 Petroleum Processing, Coking and Nuclear Fuel Processing Industry 14 Manufacturing of Chemical Raw Materials and Chemicals 15 Manufacturing of Medicine 16 Manufacturing of Chemical Fibers/Kloc-0. 7 Rubber products industry 18 plastic products industry 19 nonmetallic mineral products industry 20 ferrous metal smelting and rolling processing industry 2 1 Non-ferrous metal smelting and rolling processing industry 22 metal products industry 23 general equipment manufacturing industry 24 special equipment manufacturing industry 25 transportation equipment manufacturing industry 26 electrical machinery and equipment manufacturing industry 27 communication equipment, computer and other electronic equipment manufacturing industry 28 instrumentation and culture, office machinery manufacturing industry 29 handicrafts and other manufacturing industry 30 waste resources and waste materials recycling processing industry directly reflects the productivity level of a country and is an important factor to distinguish developing countries from developed countries. Manufacturing industry occupies an important share in the national economy of developed countries. Manufacturing industry includes: product design, raw material procurement, product manufacturing, warehousing and transportation, order processing, wholesale operation and retail.