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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
Aluminum hydroxide
WITHDRAWN published on 1.1.1984
Selected format:Aluminium hydroxide
WITHDRAWN published on 22.12.1997
Selected format:-
WITHDRAWN published on 1.1.1984
Selected format:Tungsten carbide powder
WITHDRAWN published on 20.3.1993
Selected format:Tungsten carbide powder
WITHDRAWN published on 31.3.2008
Selected format:Magnesium alloy wrought products--Microstructure--Inspection method
WITHDRAWN published on 28.3.1984
Selected format:Inspection method for microstructure of wrought magnesium alloy
WITHDRAWN published on 24.3.2004
Selected format:Magnesium alloy wrought products--macrostructure--inspection method
WITHDRAWN published on 28.3.1984
Selected format:The activation analysis method for the determination of elemental impurities in semiconductor silicon materials
WITHDRAWN published on 28.3.1984
Selected format:Symbols for ships"" ventilation system
WITHDRAWN published on 4.4.1984
Selected format:Latest update: 2025-10-15 (Number of items: 2 238 420)
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