This article will provide you with a detailed description of the industry codes corresponding to the various types of units. First of all, the code for agriculture, forestry, animal husbandry and fishery is 11; then comes the mining industry, whose code is 21. the code for manufacturing industry is 22, including the electricity, heat, gas and water production and supply industry, whose code is 23. the code for the construction industry is 24. in the wholesale and retail trade industry, you can find the code 31; the code for the transportation, warehousing and postal service industry is 32; and the corresponding code for the accommodation and catering industry is 33. the code for the information transmission, software and information technology services is code 34, while finance is code 35 and real estate is code 36. leasing and business services is code 37, and scientific research and technology services is code 38. water, environment and public **** facilities management is code 39. residential services, repairs and other services is code 41, education is code 42, and health and Social Work has a code of 43. Culture, Sports and Recreation has a code of 44, Public **** Management, Social Security and Social Organizations has a code of 45, and International Organizations comes under 80, and lastly, the Army industry is not included in this list. With these industry codes, you can get an accurate idea of the industry category to which different organizations belong.