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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 and implements--Four-point rigid hitch--Specifications
WITHDRAWN published on 1.12.1997
Selected format:Agricultural tractors and machinery—Power take-off drive shafts and position of power-input connection
WITHDRAWN published on 1.12.1997
Selected format:Special postal envelope—Envelope of domestic express mail
WITHDRAWN published on 2.12.1997
Selected format:Colourless optical glass test methods of chemical stability—Powder
WITHDRAWN published on 3.12.1997
Selected format:Determination of density of pigments—pyknometer method
WITHDRAWN published on 31.3.1989
Selected format:Water quality--Determination ofsulfide--Direct development of the spectrophotometry
WITHDRAWN published on 8.12.1997
Selected format:-
WITHDRAWN published on 1.1.1979
Selected format:Information technology—Open systems interconnection—Systems management overview
WITHDRAWN published on 15.12.1997
Selected format:Petroleum products—Determination of carbon residue—Micro method
WITHDRAWN published on 11.12.1997
Selected format:Technical guides for collection and re-refining of used oil
WITHDRAWN published on 12.12.1997
Selected format:Latest update: 2025-11-14 (Number of items: 2 243 651)
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