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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
Fixtures and fittings for toilet
WITHDRAWN published on 4.6.1991
Selected format:Fixtures for bathroom
WITHDRAWN published on 30.6.2008
Selected format:Test method for activity of industrial waste slag used as addition to cement
WITHDRAWN published on 4.6.1991
Selected format:Composite portland cement
WITHDRAWN published on 30.7.1999
Selected format:Test method for heat of hydration of cement—The heat of solution method
WITHDRAWN published on 4.6.1991
Selected format:Test methods for heat of hydration of cement
WITHDRAWN published on 9.1.2008
Selected format:Chemical reagent--L-Cystine
WITHDRAWN published on 1.9.1992
Selected format:Method for determining the contents of constituents of cement
WITHDRAWN published on 15.5.1996
Selected format:Quantitative determination of constituents of cement
WITHDRAWN published on 26.3.2007
Selected format:Quantitative determination of constituents of cement
WITHDRAWN published on 26.3.2007
Selected format:Latest update: 2026-01-16 (Number of items: 2 254 749)
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