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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
Rubber--Determination of copper content by atomic absorption spectrometry
Standard published on 28.8.2001
Selected format:Rubber--Determination of copper content--Zinc diethyldithiocarbamate photometric method
Standard published on 28.8.2001
Selected format:Colour carbon black
Standard published on 9.3.2022
Selected format:Colour blackDetermination of volatile content
Standard published on 1.8.2006
Selected format:Colour black—Determination of chrominance
Standard published on 27.2.2026
Selected format:Colour carbon black - Determination of flow characteristic
Standard published on 29.6.2012
Selected format:Safety requirements for portable wood ladders
Standard published on 26.6.2007
Selected format:Safety requirements for portable wood ladders
Standard published on 26.6.2007
Selected format:Hot rolled section steel
Standard published on 30.12.2016
Selected format:Hot rolled section steel
Standard published on 30.12.2016
Selected format:Latest update: 2026-11-10 (Number of items: 2 209 227)
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