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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
Vulcanized rubber--Identification of polymers--Pyrolytic gas chromatographic method
WITHDRAWN published on 1.1.1985
Selected format:Rubber--Identification of polymers (single polymers and blends)--Pyrolytic gas chromatographic method
WITHDRAWN published on 1.1.1994
Selected format:Vulcanized rubber--Determination of accelerant--Thin layer chromatographic method
WITHDRAWN published on 1.1.1985
Selected format:Vulcanized rubber-—Determination of accelerant—Thin layer chromatographic method
WITHDRAWN published on 28.10.1996
Selected format:Chemical reagent--Preparations of reagent solutions for use in test methods
WITHDRAWN published on 5.9.1988
Selected format:Chemical reagent—Preparations of reagent solutions for use in test methods
WITHDRAWN published on 15.10.2002
Selected format:Vulcanized rubber—Determination of carbon black dispersion—Micrographic method
WITHDRAWN published on 24.5.1985
Selected format:-
WITHDRAWN published on 1.1.1985
Selected format:Rubber,vulcanized or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100IRHD)
WITHDRAWN published on 4.11.1998
Selected format:Rubber, vulcanized or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100 IRHD)
WITHDRAWN published on 12.7.2017
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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