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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
Method for chemical analysis of platinumrhodiumalloys
WITHDRAWN published on 13.2.1979
Selected format:Gas analysis—Vocabulary
WITHDRAWN published on 30.12.1993
Selected format:Gas analysis—Vocabulary
WITHDRAWN published on 15.5.2008
Selected format:Gas for electronic industry—Phosphine
WITHDRAWN published on 30.12.1993
Selected format:Gas for electronic industry - Phosphine
WITHDRAWN published on 30.10.2009
Selected format:Determination of trace oxygen in gases—Phosphor chemiluminescence method
WITHDRAWN published on 30.12.1993
Selected format:Rubber compounding ingredients--Carbon black, pelletized--Determination of pour density
WITHDRAWN published on 1.1.1993
Selected format:Rubber compounding ingredients—Carbon black,pelletized—Determination of pour density
WITHDRAWN published on 29.5.2002
Selected format:Rubber compounding ingredients--Carbon black, pelletized--Determination of fines content
WITHDRAWN published on 1.1.1993
Selected format:Rubber compounding ingredients—Carbon black,pelletized—Determination of fines content
WITHDRAWN published on 29.5.2002
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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