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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
Measurement of airborne noise emitted by rotating electrical machines and the noise limits—Part 3:Noise limits
WITHDRAWN published on 30.4.2006
Selected format:Measurement of airborne noise emitted by rotating electrical machines and the noise limits—Part 3:Noise limits
WITHDRAWN published on 19.6.2008
Selected format:Small hexagon medium thin nuts
WITHDRAWN published on 13.10.1976
Selected format:Specifications of electronic flash equipments for photograph
WITHDRAWN published on 1.1.1988
Selected format:Specifications of electronic flash equipments for photograph
WITHDRAWN published on 25.7.2003
Selected format:Methods of evaluation for image quality of electrostatic copies
WITHDRAWN published on 1.1.1988
Selected format:Methods of evaluation for image quality of electrostatic copies
WITHDRAWN published on 13.12.1996
Selected format:Methods of evaluation for image quality of electrostatic copes
WITHDRAWN published on 2.7.2008
Selected format:(Xerographic dry toner charge to mass ratio measurement method)
WITHDRAWN published on 1.1.1988
Selected format:(Industrial process measurement and control systems with electric and pneumatic method of evaluating the performance simulation calculator)
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2026-07-24 (Number of items: 2 290 214)
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