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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 L-lysine monohydrochloride
WITHDRAWN published on 1.1.1987
Selected format:Economic threshold of the rice stem borer
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Sodium propionate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Calcium propionate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Copper sulphate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Magnesium sulphate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Zinc sulphate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Ferrous sulfate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade Manganese sulphate
WITHDRAWN published on 1.1.1987
Selected format:Feed grade sodium selenite
WITHDRAWN published on 1.1.1987
Selected format:Latest update: 2026-08-07 (Number of items: 2 292 304)
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