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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
Methods for testing uniformity of concrete admixture
WITHDRAWN published on 31.12.2012
Selected format:Seed of green manure crops
WITHDRAWN published on 30.6.1987
Selected format:Raw natural rubber—Standard rubber—Specifications
WITHDRAWN published on 11.8.1999
Selected format:Rubber,raw natural—Guidelines for the specification of technically specified rubber(TSR)
WITHDRAWN published on 4.6.2008
Selected format:Raw natural rubber—Standard rubber—Packing, marks, storage and transportion
WITHDRAWN published on 11.8.1999
Selected format:Raw natural rubber—Standard rubber—Packing,marks,storage and transportion
WITHDRAWN published on 19.6.2008
Selected format:Raw natural rubber—Standard rubber—Sampling
WITHDRAWN published on 27.7.1987
Selected format:Raw natural rubber—Sample preparation
WITHDRAWN published on 27.7.1987
Selected format:Raw natural rubber—Determination of dirt
WITHDRAWN published on 27.7.1987
Selected format:Raw natural rubber—Determination of dirt
WITHDRAWN published on 15.5.2008
Selected format:Latest update: 2025-07-13 (Number of items: 2 208 181)
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