gb is the abbreviation of national standard, the details are as follows:

I. Definition of national standard and:

National standard is a standard formulated at the national level in accordance with the requirements of laws and regulations, which is universally applicable and mandatory. National standards usually cover products, processes, services, management and other aspects of the content, aimed at standardizing and guiding the development and practice of related fields.

National standards are formulated and issued by the national standardization administration or other relevant institutions in accordance with the law, which have legal effect and are binding on practitioners and enterprises in the relevant fields.

The national standard is a standard formulated uniformly throughout the country, with universal applicability and standardization, which can unify product quality and safety standards, and improve the level of the industry and market competitiveness.

The formulation of national standards is based on scientific research and practical experience, after expert verification and public participation, with authority and reliability, national standards are not permanent, with the development of science and technology and changes in social needs, national standards need to be revised and updated periodically to meet new development needs.

The process of developing national standards:

Determine the development needs, according to the needs of industry development and the requirements of relevant laws and regulations, to determine the need to formulate or revise the national standards of the field and the scope of the standardization of standardized management bodies or related departments to organize experts and scholars, as well as practitioners and other organizations to form a working group responsible for the development of the draft of the national standards.

The working group will formulate the draft of the national standard, including the name of the standard, scope of application, technical requirements, test methods, etc., based on the technical development dynamics and practical experience at home and abroad.

The draft will be released to the public or relevant units for comments, and according to the feedback for modification and improvement, and finally approved and passed by the standardization authority or relevant departments, after approval and passage, the national standard will be officially released by the relevant agencies and begin to be implemented. Public enterprises and institutions and regulatory agencies need to conduct production and management in accordance with the requirements of the national standard.

Three, the scope of application of the national standard:

The national standard can regulate the quality and safety standards and performance requirements of all kinds of products, such as food safety standards, standards for medical devices, standards for construction materials. National standards can set standards for environmental protection and resource utilization, such as air pollutant emission standards, water quality standards, energy utilization standards.

National standards can standardize the quality management and service process of the service industry, such as education service standards, catering service standards, and tourism service standards. National standards can formulate industry norms and standards to promote the standardized development of the industry, such as construction industry standards, transportation industry standards, financial industry standards and so on.