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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
Radio-frequency and coaxial cable assemblies—Part 1:Generic specification—General requirements and test methods
WITHDRAWN published on 26.4.1999
Selected format:Micrographics—Microfilming of drawings of special and exceptional elongated sizes
WITHDRAWN published on 26.4.1999
Selected format:Microfilming of technical drawings and technical documents—Part 2:Quality criteria and control of 35 mm silver gelatin microfilms
WITHDRAWN published on 23.8.2006
Selected format:Microfilming of technical drawings and technical documents—Part 6:Quality criteria and control of systems for enlargements from 35mm microfilm
WITHDRAWN published on 21.5.2002
Selected format:Superfine silver powder
WITHDRAWN published on 1.1.1988
Selected format:Superfine silver powders
WITHDRAWN published on 17.10.1995
Selected format:General ruler for earthquake magnitude
WITHDRAWN published on 26.4.1999
Selected format:Code for seismic safety evaluation of engineering sites
WITHDRAWN published on 26.4.1999
Selected format:Evaluation of seismic safety for engineering sites
WITHDRAWN published on 28.3.2005
Selected format:The Chinese seismic intensity scale
WITHDRAWN published on 26.4.1999
Selected format:Latest update: 2026-04-28 (Number of items: 2 274 955)
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