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Standards GB - Chinese national standards - Page 7725
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
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GB/T 8981-1988
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Determination of trace hydrogen in gases—Gas chromatographic method
WITHDRAWN published on 15.3.1988
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GB/T 8981-2008
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Determination of trace hydrogen in gases—Gas chromatographic method
WITHDRAWN published on 15.5.2008
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GB 8982-1998
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Oxygen supplies for medicine
WITHDRAWN published on 19.10.1998
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GB 8983-1998
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Breathing oxygen supplies for aircraft
WITHDRAWN published on 19.10.1998
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GB/T 8984.1-1997
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Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 1:Determination of carbon monoxide,carbon dioxide and mathane in the gases—Gas chromatographic method
WITHDRAWN published on 13.8.1997
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GB/T 8984.2-1997
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Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 2:Determination of total content of carbon monoxide,carbon dioxide and hydrocarbon in gases—Gas chromatographic method
WITHDRAWN published on 13.8.1997
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GB/T 8984.3-1997
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Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 3:Determination of total hydrocarbon in gases—Flame ionization method
WITHDRAWN published on 13.8.1997
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GB/T 8987-1988
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Micrographics—Test target of optical density measurement for microfilming negative
WITHDRAWN published on 11.4.1988
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GB/T 8988-1988
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Micrographics—Manufacture of test target for inspecting the quality of micrography of technical drawings
WITHDRAWN published on 11.4.1988
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GB/T 8989-1998
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Micrographics—Ouality criteria and control of micrography of technical drawings and documentations
WITHDRAWN published on 27.3.1998
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