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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
Construction winch--Test code and procedures
WITHDRAWN published on 1.1.1986
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WITHDRAWN published on 1.1.1986
Selected format:Microscopical determination of the reflectance of vitrinite in coal
WITHDRAWN published on 8.12.1998
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WITHDRAWN published on 1.1.1986
Selected format:Determination of apparent relative density of coal
WITHDRAWN published on 8.12.1998
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WITHDRAWN published on 1.1.1977
Selected format:Chemical reagent—Potassium oxalate monohydrate
WITHDRAWN published on 23.3.1994
Selected format:Safe rest conductivity of light fuel oil
WITHDRAWN published on 1.1.1986
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WITHDRAWN published on 1.1.1986
Selected format:Sanitary wares
WITHDRAWN published on 4.3.1999
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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