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Standards GB - Chinese national standards - Page 7615
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 9578-1988
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Standard reference black
WITHDRAWN published on 29.6.1988
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GB/T 9578-2002
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Standard reference black 3#
WITHDRAWN published on 29.5.2002
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GB/T 9578-2011
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Industry reference carbon black 4#
WITHDRAWN published on 5.12.2011
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GB/T 9579-1998
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Carbon black in SBR(Styrene-butadiene rubber)-Recipe and evaluation method
WITHDRAWN published on 4.11.1998
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GB/T 958-1989
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Geological symbols used for regional geological maps (1:50000)
WITHDRAWN published on 22.2.1989
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GB/T 9580-1988
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Standard practice for carbon black--Evaluation of a standard reference black
WITHDRAWN published on 29.6.1988
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GB/T 9580-2002
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Standard practice for carbon black—Evaluation of a standard reference black
WITHDRAWN published on 29.5.2002
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GB/T 9581-2002
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Oil for use in the carbon black products—Ethylene bottom
WITHDRAWN published on 24.9.2002
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GB/T 9582-1998
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Photography—Industrial radiographic film—Determination of ISO speed and average gradient when exposed to X-and -radiation
WITHDRAWN published on 16.1.1998
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GB/T 9586-1988
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Methods of accelerated life test of fluorescent display tubes
WITHDRAWN published on 29.6.1988
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