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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
Corrosivity classification of atmospheric environment
WITHDRAWN published on 21.12.1995
Selected format:Determination of speed of black-and-white motion-picture negative film
WITHDRAWN published on 20.12.1995
Selected format:Fly ash used for cement and concrete
WITHDRAWN published on 4.6.1991
Selected format:Fly ash used for cement and concrete
WITHDRAWN published on 19.1.2005
Selected format:Fly ash used for cement and concrete
WITHDRAWN published on 19.1.2005
Selected format:Single sideband(SSB) system specifications for HF broadcasting
WITHDRAWN published on 22.12.1995
Selected format:Food additive—Monascus color
WITHDRAWN published on 26.12.1995
Selected format:Food additive—Monascus color
WITHDRAWN published on 30.6.2005
Selected format:Glossary of printing ink terms
WITHDRAWN published on 26.12.1995
Selected format:Glossary of printing ink terms
WITHDRAWN published on 19.8.2008
Selected format:Latest update: 2026-04-01 (Number of items: 2 270 267)
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