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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
Terms of concrete admixtures
Standard published on 29.12.2017
Selected format:Concrete admixtures
Standard published on 31.10.2025
Selected format:Methods for testing uniformity of concrete admixtures
Standard published on 28.12.2023
Selected format:Small hexagon thin nuts--Fine pitch thread
Standard published on 24.6.1988
Selected format:Seed of green manure crops
Standard published on 14.1.2011
Selected format:Rubber,raw natural—Guidelines for the specification of technically specified rubber(TSR
Standard published on 28.12.2018
Selected format:Rubber,raw natural—Technically specified rubber(TSR)—Packing, marking, storage and transportion
Standard published on 28.12.2018
Selected format:Rubber, raw natural—Determination of dirt content
Standard published on 4.6.2019
Selected format:Raw natural rubber and natural rubber latex—Determination of nitrogen content
Standard published on 30.6.2025
Selected format:Raw natural rubber - Smoked sheetswhite crepes and pale crepes
Standard published on 31.8.2007
Selected format:Latest update: 2026-08-19 (Number of items: 2 298 207)
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