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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
High purity germanium dioxide
Standard published on 14.10.2017
Selected format:Reduced germanium ingot
Standard published on 14.10.2017
Selected format:Zone-refined germanium ingot
Standard published on 28.12.2018
Selected format:Indium antimonide polycrystal,single crystals and as-cut slices
Standard published on 30.10.2009
Selected format:Standard method for measuring radial resistivity variation on silicon slices
Standard published on 11.9.2007
Selected format:
Test method for measuring radial resistivity variation on silicon wafers
Execute Date: may 2026
Standard published on 31.10.2025
Selected format:Lithium carbonate
Standard published on 6.9.2013
Selected format:Test method for carbonizable substances in white mineral oil
Standard published on 31.12.2015
Selected format:Standard Test Method for Ultraviolet Adsorption of White Oils
Standard published on 25.5.2005
Selected format:Loss of bulk petroleum liquid products
Standard published on 31.3.1989
Selected format:Latest update: 2026-04-23 (Number of items: 2 274 600)
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