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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
General specification of nanometer thin standard specimen for analytical transmission electron microscopy(AEM/EDS)
WITHDRAWN published on 22.5.2002
Selected format:Mineral admixtures for high strength and high performance concrete
WITHDRAWN published on 30.5.2002
Selected format:High protein instant soybean powder
WITHDRAWN published on 29.5.2002
Selected format:Xuan paper
WITHDRAWN published on 29.5.2002
Selected format:Determination of the acid insoluble substance content in phosphorus concentrates and phosphorus minerals
WITHDRAWN published on 1.1.1980
Selected format:Huanghua brumal jujube
WITHDRAWN published on 29.5.2002
Selected format:Health standard of architectural design in school for the blind
WITHDRAWN published on 29.5.2002
Selected format:Polypropylene piping systems for hot and cold water installations—Part 1:General
WITHDRAWN published on 29.5.2002
Selected format:Polypropylene piping systems for hot and cold water installations—Part 2:Pipes
WITHDRAWN published on 29.5.2002
Selected format:Polypropylene piping systems for hot and cold water installations—Part 3:Fittings
WITHDRAWN published on 29.5.2002
Selected format:Latest update: 2025-12-23 (Number of items: 2 253 013)
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