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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
Method for analysis of calcium metal - Part 3: Direct determination of ironnickelcoppermanganese and magnesium in calcium metal by atomic absorptiom spectrophotometry
Standard published on 2.7.2008
Selected format:Method for analysis of calcium metal--The determination of aluminium by oxine chloroform extraction photometric method
Standard published on 30.12.1988
Selected format:Method for analysis of calcium metal--The determination of nitrogen by distillation--Nessler reagent photometric method
Standard published on 30.12.1988
Selected format:Uranium ore concetrate
Standard published on 19.6.2008
Selected format:Industrial surplus energy resources evaluation methods
Standard published on 17.9.2018
Selected format:Forestry machinery - Portable pneumatic fire extinguisher
Standard published on 11.12.2008
Selected format:Forestry machinery—Portable pneumatic fire extinguisher—Measurement of vibration
Standard published on 24.2.2016
Selected format:Forestry machinery—Portable pneumatic fire extinguisher—Measurement of noise
Standard published on 24.2.2016
Selected format:National food safety standards -- Food additives -- Rosin and partially hydrogenated rosin
Standard published on 25.12.2012
Selected format:Test method for down and feather
Standard published on 30.12.2016
Selected format:Latest update: 2025-08-04 (Number of items: 2 211 733)
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