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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
Additive manufacturing—Process categories and feedstock
WITHDRAWN published on 14.5.2018
Selected format:Technical requirements of yttrium oxide of phosphor grade for colour TV sets
WITHDRAWN published on 1.1.1983
Selected format:Yttrium oxide
WITHDRAWN published on 15.9.1993
Selected format:Yttrium oxide
WITHDRAWN published on 13.4.2006
Selected format:Europium oxide phosphor grade
WITHDRAWN published on 9.7.1992
Selected format:Europium oxide
WITHDRAWN published on 13.4.2006
Selected format:Technical specification for the production of national cotton color grade physical standard
WITHDRAWN published on 14.5.2018
Selected format:Geometrical product specifications (GPS)—Surface texture:Profile method—Terms, definitions and surface texture parameters
WITHDRAWN published on 24.7.2000
Selected format:-
WITHDRAWN published on 1.1.1983
Selected format:Machine taps with helical flutes
WITHDRAWN published on 17.4.1993
Selected format:Latest update: 2025-12-21 (Number of items: 2 252 887)
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