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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
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WITHDRAWN published on 1.1.1981
Selected format:Fibrous raw material—Determination of moisture content
WITHDRAWN published on 1.3.1993
Selected format:Fibrous raw material—Determination of ash
WITHDRAWN published on 1.3.1993
Selected format:Paper-making raw material--Determination of content of ether extract
WITHDRAWN published on 1.1.1981
Selected format:Paper-making raw material--Determination of content of benzene alcohol extract
WITHDRAWN published on 1.1.1981
Selected format:Paper-making raw material--Determination of lignin content
WITHDRAWN published on 1.1.1981
Selected format:Paper-making raw material--Determination of polypentose content
WITHDRAWN published on 1.1.1981
Selected format:The setting specification for microwave traffic detector
WITHDRAWN published on 20.7.2011
Selected format:Technical specification for car transport vehicles
WITHDRAWN published on 20.7.2011
Selected format:Semitrailer landing gears
WITHDRAWN published on 20.7.2011
Selected format:Latest update: 2026-04-15 (Number of items: 2 272 661)
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