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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
Proton exchange membrane fuel cell—Part 3:Test method for proton exchange membrane
WITHDRAWN published on 21.4.2009
Selected format:Proton exchange membrane fuel cell - Part 4: Test method for electrocatalysts
WITHDRAWN published on 21.4.2009
Selected format:Proton exchange membrane fuel cell—Part 5:Test method for membrane electrode assembly
WITHDRAWN published on 21.4.2009
Selected format:Proton exchange membrane fuel cell—Part 6:Test method of bipolar plate properties
WITHDRAWN published on 30.12.2011
Selected format:Proton exchange membrane fuel cells—Part 7:Test method of carbon paper properties
WITHDRAWN published on 5.12.2014
Selected format:Electrical accessories—Portable residual current devices without integral overcurrent protection for household and similar use(PRCDs)
WITHDRAWN published on 9.10.2005
Selected format:Photovoltaic (PV) module safety qualification - Part 1: Requirements for construction
WITHDRAWN published on 13.1.2006
Selected format:Amusement devices code name
WITHDRAWN published on 9.1.2006
Selected format:Method for determination of coke particle content and the lump granulometric composition in metallurgical cokes
WITHDRAWN published on 1.1.1980
Selected format:Amusement devices inspect acceptance
WITHDRAWN published on 9.1.2006
Selected format:Latest update: 2026-05-02 (Number of items: 2 275 366)
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