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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
Designation and classification of rapidly quenched metals
WITHDRAWN published on 4.4.1994
Selected format:Designation and classification of rapidly quenched metals
WITHDRAWN published on 3.11.2003
Selected format:-
WITHDRAWN published on 1.1.1979
Selected format:Quartz crystal units for use in electronic equipment—Blank detail specification—Resistance welded quartz crystal units—Assessment level E
WITHDRAWN published on 4.4.1994
Selected format:Micrographics—Rules for microfilming technical drawings and technical documentations on 35mm roll film
WITHDRAWN published on 1.4.1994
Selected format:Definitions and general requirements for solventless polymerisable resinous compounds used for electrical insulation
WITHDRAWN published on 12.4.1994
Selected format:Resin based reactive compounds used for electrical insulation—Part 2:Methods of test
WITHDRAWN published on 3.12.2007
Selected format:Test methods for solventless polymerisable resinous compounds used for electrical insulation
WITHDRAWN published on 12.4.1994
Selected format:Airplane flight simulator qualification procedures
WITHDRAWN published on 22.3.1994
Selected format:Airplane flight simulator standards
WITHDRAWN published on 22.3.1994
Selected format:Latest update: 2026-01-25 (Number of items: 2 257 482)
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