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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
Information classification and code for Waterway
WITHDRAWN published on 16.4.1999
Selected format:Testing method of main parameters for laser protective eyewear
WITHDRAWN published on 26.4.1999
Selected format:Radio-frequency cables—Part 1:Generic specification—General, definitions, requirements and test methods
WITHDRAWN published on 11.12.2000
Selected format:Radio-frequency cables—Part 2:Sectional specification for semi-rigid radio-frequency and coaxial cables with polytetrafluoroethylene(PTFE) insulation
WITHDRAWN published on 11.12.2000
Selected format:Coaxial communication cables—Part 4: Sectional specification for leaky cables
WITHDRAWN published on 17.12.2013
Selected format: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WITHDRAWN published on 26.4.1999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WITHDRAWN published on 26.4.1999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WITHDRAWN published on 23.8.2006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WITHDRAWN published on 21.5.2002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WITHDRAWN published on 1.1.1988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:Latest update: 2026-08-14 (Number of items: 2 293 479)
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