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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
General rules of visual quality for moulded and extruded rubber products
WITHDRAWN published on 1.1.1987
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WITHDRAWN published on 1.1.1965
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WITHDRAWN published on 1.1.1987
Selected format:Determination of ash for organic chemical products
WITHDRAWN published on 26.3.1987
Selected format:Organic chemical products—Determination of heary metals content—General method—Visual limit test
WITHDRAWN published on 26.3.1987
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WITHDRAWN published on 1.1.1987
Selected format:Volatile organic liquids for industrial use--Determination of boiling range
WITHDRAWN published on 26.3.1987
Selected format:Rubber, vulcanized--Classification--Description of the classification system
WITHDRAWN published on 1.1.1987
Selected format:Rubber, vulcanized—Classification—Description of the classification system
WITHDRAWN published on 28.10.1996
Selected format:Rubber coated fabrics--Determination of flex abrasion
WITHDRAWN published on 1.1.1987
Selected format:Latest update: 2026-06-14 (Number of items: 2 282 206)
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