List of industry classification codes:

1. National economy industry classification and codes (GB/4754-2111).

2. A Agriculture, forestry, animal husbandry and fishery. B mining industry; C manufacturing industry.

3. D Electricity, heat, gas and water production and supply industries.

4, e construction industry; F wholesale and retail trade; G transportation, warehousing and postal services.

5. h Accommodation and catering industry; I information transmission, software and information technology services.

6, j financial industry; K real estate industry; L leasing and business services.

7, m scientific research and technical services; N Water conservancy, environment and public facilities management.

8. o Resident services, repairs and other services; P education; Q health and social work.

industry classification of national economy: agriculture, forestry, animal husbandry, fishery, mining, manufacturing, electricity, heat, gas and water, etc. Industry classification refers to the detailed division of the organizational structure system of business units or individuals engaged in the production of the same nature in the national economy or other economic and social activities, such as forestry, automobile industry and banking.