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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
General requirements for the competence of testing and calibration laboratories
WITHDRAWN published on 27.12.2000
Selected format:Single sampling procedures and tables for product quality audit of small population by attributes
WITHDRAWN published on 30.6.1995
Selected format:Development and operation of laboratory proficiency testing
WITHDRAWN published on 1.1.1995
Selected format:Proficiency testing by interlaboratory comparisons—Part 1:Development and operation of proficiency testing schemes
WITHDRAWN published on 8.3.1999
Selected format:Proficiency testing by interlaboratory comparisons—Part 2:Selection and use of proficiency testing schemes by laboratory accreditation bodies
WITHDRAWN published on 8.3.1999
Selected format:Acoustics—methods for the calculation of the articulation index of speech
WITHDRAWN published on 3.7.1995
Selected format:Calibration and testing laboratory accreditation systems—General requirements for operation and recognition
WITHDRAWN published on 14.2.1995
Selected format:Methods of flow measurement for displacement compressor
WITHDRAWN published on 27.1.1995
Selected format:Color filter glass
WITHDRAWN published on 13.1.1995
Selected format:Color filter glass test methods Fluorescence characteristic
WITHDRAWN published on 13.1.1995
Selected format:Latest update: 2026-03-27 (Number of items: 2 269 573)
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