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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
Feed grade Cobalt chloride
WITHDRAWN published on 1.1.1987
Selected format:Feed grade potassium iodide
WITHDRAWN published on 1.1.1987
Selected format:Feed grade calcium carbonate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade calcium phosphate dibasic
WITHDRAWN published on 1.1.1987
Selected format:Specification for flexible coupling of housing
WITHDRAWN published on 15.10.1987
Selected format:Layout key for original document of administration
WITHDRAWN published on 22.2.1989
Selected format:Flexible coupling of housing for pipe end with rib ring
WITHDRAWN published on 15.10.1987
Selected format:Flexible coupling of housing for pipe end with shoulder
WITHDRAWN published on 15.10.1987
Selected format:Bolts, round head with oval neck
WITHDRAWN published on 15.10.1987
Selected format:Abrasion-resistant white iron castings
WITHDRAWN published on 3.9.1999
Selected format:Latest update: 2026-08-07 (Number of items: 2 292 304)
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