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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Technical product documentation - Handling of computer-based technical information - Document management and retrieval systems
Standard published on 26.6.2008
Selected format:Information technology--Protocol for providing the OSI connectionless-mode transport service
Standard published on 26.12.1996
Selected format:Information technology--Telecommunications and information exchange between systems--X.25-DTE conformance testing--Part 2:Data link layer conformance test suite
Standard published on 26.12.1996
Selected format:Information technology--Telecommunications and information exchange between systems--X.25-DTE conformance testing--Part 3:Packet layer conformance test suite
Standard published on 26.5.1997
Selected format:Technical requirements for transmitter and receiver for globle marine distress safty system
Standard published on 2.1.1997
Selected format:Precast concrete plate for composite slab
Standard published on 31.10.2025
Selected format:Prestressed concrete ribbed roof slabs
Standard published on 11.9.2007
Selected format:Classification of sound absorption property for absorbent products using in buildings
Standard published on 17.3.2023
Selected format:Heating, ventilation, air conditioning and air cleaning equipment in building—Units and symbols
Standard published on 23.5.2023
Selected format:Stage division and code of procedure for development of national standards
Standard published on 27.1.1997
Selected format:Latest update: 2026-06-16 (Number of items: 2 283 261)
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