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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
Unsaturated polyester resin—Determination of solid content
WITHDRAWN published on 16.1.1987
Selected format:Unsaturated polyester resin—Determination of reactivity at 80
WITHDRAWN published on 16.1.1987
Selected format:Unsaturated polyester resin—Determination of heat stability at 80
WITHDRAWN published on 16.1.1987
Selected format:Unsaturated polyester resin—Determination of gel time at 25
WITHDRAWN published on 16.1.1987
Selected format:Test method for colour of liquid unsaturated polyester resin
WITHDRAWN published on 29.4.1992
Selected format:Unsaturated polyester resin--Determination of stab-ility of casting resin in basic solution
WITHDRAWN published on 16.1.1987
Selected format:Test methods of mica papers
WITHDRAWN published on 21.1.1987
Selected format:Methods of test for the determination of ionic impurities in electrical insulating materials by extraction with liquids
WITHDRAWN published on 21.1.1987
Selected format:Detail specification for electronic component--Semiconductor integrated circuit-CE10101 ECL Quad 2 input OR/NOR gate
WITHDRAWN published on 1.1.1987
Selected format:Detail specification for electronic component--Semiconductor integrated circuit-CE10102 ECL Quad 2 input NOR gate
WITHDRAWN published on 1.1.1987
Selected format:Latest update: 2026-04-05 (Number of items: 2 271 011)
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