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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
Speech material library used DRT for articulation evaluation of communication equipments
WITHDRAWN published on 9.9.1996
Selected format:Test method for Vickers hardness of high performance ceramics
WITHDRAWN published on 13.9.1996
Selected format:Test method for linear thermal expansion of high performance ceramics
WITHDRAWN published on 13.9.1996
Selected format:Chemical analyzing methods of fritted glaze for ceramics
WITHDRAWN published on 13.9.1996
Selected format:Acoustics—Determination of sound power levels of noise sources using sound pressure—Survey method using a reference sound source
WITHDRAWN published on 13.9.1996
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WITHDRAWN published on 1.1.1979
Selected format:Safety technical requirements for shaft cage hoisting signal system
WITHDRAWN published on 25.9.1996
Selected format:Safety technical requirements for cage
WITHDRAWN published on 25.9.1996
Selected format:Safety regulations for the explosion precautions of bituminous coal injection into blast furnace
WITHDRAWN published on 25.9.1996
Selected format:Spherical tank—Radiographic method of gamma ray panoramic exposure
WITHDRAWN published on 27.9.1996
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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