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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
VMEbus extensions for intrumentation - Part 4: TCP/IP-IEEE488.2 instrument interface specification
WITHDRAWN published on 30.6.2008
Selected format:Milestones and activities during commissioning of electrical instrumentation and control systems in the process industry
WITHDRAWN published on 18.6.2008
Selected format:Valve positioners for use in industrial-process control system—Part 2:Methods of evaluating the performance of intelligent valve positioners with pneumatic outputs
WITHDRAWN published on 30.6.2008
Selected format:Specification for film tension in 35mm motion-picture systems
WITHDRAWN published on 30.6.2008
Selected format:(The parts and units of jigs and fixtures. Thick baffle)
WITHDRAWN published on 1.1.1991
Selected format:Code for field acceptance test of small hydro turbines
WITHDRAWN published on 27.6.2008
Selected format:Feed additive—General rules for compound acidifier
WITHDRAWN published on 27.6.2008
Selected format:Feed additive - General regulation for organic acidifier
WITHDRAWN published on 27.6.2008
Selected format:Simultaneous determination of salbutamol, ractopamine and clenbuterol in feeds - Liquid chromatography-mass spectrometry
WITHDRAWN published on 27.6.2008
Selected format:Test method on electromagnetic emissions from electronic ballasts for single-and double-capped fluorescent lamps
WITHDRAWN published on 2.7.2008
Selected format:Latest update: 2026-01-20 (Number of items: 2 257 233)
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