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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
Barrel thread for E14 and E27 lampholders with shade holder ring
WITHDRAWN published on 6.3.2006
Selected format:CIE standard illuminants for colorimetry
WITHDRAWN published on 6.3.2006
Selected format:White portland cement
WITHDRAWN published on 22.3.1991
Selected format:White portland cement
WITHDRAWN published on 19.1.2005
Selected format:Erythema reference action spectrum and standard erythema dose
WITHDRAWN published on 6.3.2006
Selected format:Photometry - the CIE system of physical photometry
WITHDRAWN published on 6.3.2006
Selected format:Classification and interpretation of new lighting products
WITHDRAWN published on 6.3.2006
Selected format:Low temperature freezer
WITHDRAWN published on 6.3.2006
Selected format:Low temperature freezer
WITHDRAWN published on 5.12.2014
Selected format:Determination of mercury, cadmium and lead in battery
WITHDRAWN published on 6.3.2006
Selected format:Latest update: 2026-04-30 (Number of items: 2 275 280)
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