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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
Determination of selenium in coal—Hydride generation-atomic absorption method
WITHDRAWN published on 14.6.1996
Selected format:Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid
WITHDRAWN published on 14.6.1996
Selected format:Method for evaluating the washability of coal
WITHDRAWN published on 14.6.1996
Selected format:Particle system—Vocabulary
WITHDRAWN published on 14.6.1996
Selected format:Plastics—Determination of flexural properties by use of small specimens
WITHDRAWN published on 14.6.1996
Selected format:Acid red B
WITHDRAWN published on 1.1.1982
Selected format:Plastics—Determination of impact properties by use of small specimens
WITHDRAWN published on 14.6.1996
Selected format:Plastics—Determination of tensile properties by use of small specimens
WITHDRAWN published on 14.6.1996
Selected format:Plastics—Methods of exposure to laboratory light sources Part 1:General guidance
WITHDRAWN published on 14.6.1996
Selected format:Plastics—Methods of the exposure to laboratory light sources—Part 1:General guidance
WITHDRAWN published on 1.9.2006
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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