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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
Global maritime distress and safety system—Performance requirements for marine search and rescue radar transponder (SART)
WITHDRAWN published on 8.8.1994
Selected format:Methods of measurement of screening attenuation for coaxial cables (absorbing clamp method)
WITHDRAWN published on 8.8.1994
Selected format:Standards of classification for groundwater resources
WITHDRAWN published on 24.9.1994
Selected format:Quality assurance for packaging used in the transport of radioactive materials
WITHDRAWN published on 24.9.1994
Selected format:-
WITHDRAWN published on 1.1.1979
Selected format:Evaluation of surface contamination—Part 2:Tritium surface contamination
WITHDRAWN published on 24.9.1994
Selected format:Plastics—Liquid resins—Determination of density by the pyknometer method
WITHDRAWN published on 24.9.1994
Selected format:Classification for quality of coal—Classification for ash yield of coal
WITHDRAWN published on 24.9.1994
Selected format:Classification for quality of coal—Part 1:Ash
WITHDRAWN published on 30.4.2004
Selected format:Classification for quality of coal—Part 1:Ash
WITHDRAWN published on 26.9.2010
Selected format:Latest update: 2026-03-30 (Number of items: 2 269 988)
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