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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 of determining microscopically the reflectance of vitrinite in coal
Standard published on 7.8.2008
Selected format:Determination of apparent relative density of coal
Standard published on 10.1.2011
Selected format:Safe rest conductivity of light fuel oil
Standard published on 15.9.2001
Selected format:Safe surface voltage of light fuel oil in tank filling operation
Standard published on 9.10.1986
Selected format:Sanitary wares
Standard published on 11.9.2015
Selected format:Chemical reagent - Urea
Standard published on 15.5.2008
Selected format:Tractor terminology—Part 1: Complete tractor
Standard published on 31.10.2025
Selected format:Tractor terminology—Part 2: Transmission system
Standard published on 31.10.2025
Selected format:Tractor terminology - Part 3: Braking system
Standard published on 21.3.2007
Selected format:Tractor terminology - Part 4: Running gears and undercarriages
Standard published on 21.3.2007
Selected format:Latest update: 2026-08-05 (Number of items: 2 291 440)
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