1. The nature of the unit refers to the organs, organizations, legal persons, enterprises and other non-natural entities or their subordinate departments, is used to distinguish between the working class to work in the place of the category of relations, the nature of the unit is mainly used for business registration, used to ensure that the relevant units of the legal duties as well as legal obligations.

2. The type of unit refers to the main capital attributes of the unit, including state-owned enterprises, state-controlled enterprises, foreign-funded enterprises, joint ventures, private enterprises, institutions, state administrative organs.

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3. The industry to which the unit belongs is the industry category to which the unit belongs in the National Economic Industry Classification. Including agriculture, forestry, animal husbandry and fishery, mining, manufacturing, electricity, heat, gas and water production and supply, construction, wholesale and retail trade, transportation, storage and postal services, accommodation and catering, information transmission, software and information technology services, finance, real estate, leasing and business services, scientific research and technological services, water conservancy, environment and public **** facilities management, residential services, repair and other services, and real estate. Services, Repairs and Other Services, Education, Health and Social Work, Culture, Sports and Recreation, Public **** Management, Social Security and Social Organizations, International Organizations, Others.