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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
Acceptance inspection,marking and packaging of fasteners
WITHDRAWN published on 25.7.1985
Selected format:Fasteners—Acceptance inspection
WITHDRAWN published on 5.12.2002
Selected format:The general rules for chemical analysis of electronic glass
WITHDRAWN published on 1.1.1988
Selected format:Determination of Li2O Na20 and K20 in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
Selected format:Determination of CaO SrO AND MgO in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
Selected format:Determination of ZnO PbO Al2O3 and Sb2O3 in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
Selected format:Determination of Co2O3 NiO AND MnO2 in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
Selected format:Determination of iron oxide and titania in electronic glass by photometric method
WITHDRAWN published on 1.1.1988
Selected format:Determination of zirconia in electronic glass
WITHDRAWN published on 1.1.1988
Selected format:Determination of arsenic (As2O3) in electronic glass
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2025-12-29 (Number of items: 2 253 390)
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