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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
Agricultural tractors—Rear-mounted power take-off types 1,2,3 and 4—Part 3: Main PTO dimensions and spline dimensions, location of PTO
Standard published on 24.2.2016
Selected format:Oceanographic terminology - Physical oceanography
Standard published on 14.1.2011
Selected format:Oceanographic terminology - Marine chemistry
Standard published on 14.1.2011
Selected format:Method for chemical analysis of cobalt ores - Determination of cobalt content
Standard published on 10.11.2010
Selected format:Method for chemical analysis of nickel ores - Determination of nickel content
Standard published on 10.11.2010
Selected format:Method for chemical analysis of tin ores - Determination of tin content
Standard published on 10.11.2010
Selected format:Method for chemical analysis of antimony ores - Determination of antimony content
Standard published on 10.11.2010
Selected format:Method for chemical analysis of bismuth ores - Determination of bismuth content
Standard published on 10.11.2010
Selected format:Method for chemical analysis of arsenic ores - Determination of arsenic content
Standard published on 10.11.2010
Selected format:Reinforced plastics based on unsaturated polyester resins - Determination of residual styrene monomer content
Standard published on 30.6.2008
Selected format:Latest update: 2026-06-09 (Number of items: 2 281 484)
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