Unit industry code. Industry code industry 1 1 agriculture, forestry, animal husbandry and fishery industry 2 1 mining industry 22 manufacturing industry 23 electricity, heat, gas and water production and supply industry 24 construction industry 3 1 wholesale and retail industry 32 transportation, warehousing and postal industry 33 accommodation and catering industry 34 information transmission, Software and information technology service industry 35 financial industry 36 real estate industry 37 leasing and business service industry 38 scientific research and technical service industry 39 water conservancy, environment and public facilities management industry 4 1 residential service, repair and other service industry 42 education 43 health and social work 44 culture, sports and entertainment industry 45 public management, social security and social organizations 46 international organizations 80 troops.