1. In terms of attributes, national standards are promulgated by the state (National Standardization Management Committee), and industry standards are formulated and promulgated by various ministries, industry associations, a certain field or a certain alliance.

2. In terms of content, industry standards are stricter than national standards, and national standards are the lowest threshold for standards.

3. In terms of application objects, industry standards are used for technical barriers or regional market access, while national standards are widely used within the country.

National standards refer to standards that are of great significance to the country's economic and technological development and need to be formulated with uniform technical requirements across the country. National standards are applicable nationwide, and other standards at all levels must not conflict with them. National standards are the main body in the four-level standard system.

Industry standards refer to standards formulated for technical requirements that do not have national standards but need to be unified within a certain industry across the country. The industry standard is a supplement to the national standard, and it is a professional and technical standard. The formulation of industry standards must not conflict with national standards. After the national standards are announced and implemented, the corresponding industry standards shall be abolished.