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Standards GB - Chinese national standards - Page 8374
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 6155-2008
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Carbon materials—Determination of the true density or porosity
WITHDRAWN published on 6.12.2008
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GB/T 6156-1985
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Carbon materials--Determination of the true porosity
WITHDRAWN published on 21.6.1985
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GB 6157-1985
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Determination of the ash content of high purity graphite products
WITHDRAWN published on 1.1.1985
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GB 6158-1985
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Curcumin-oxalic acid colorimetric method for the determination of the boron content of high purity graphite products
WITHDRAWN published on 1.1.1985
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GB/T 6159.1-1985
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Micrographics--Vocabulary section 1: General terms
WITHDRAWN published on 26.6.1985
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GB/T 6159.1-2003
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Micrographics—Vocabulary—Part 1:General terms
WITHDRAWN published on 14.5.2003
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GB/T 6159.2-1985
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Micrographics--Vocabulary section 4: Materials and packaging
WITHDRAWN published on 26.6.1985
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GB/T 6159.22-2000
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Micrographics—Vocabulary—Part 02:Image positions and methods of recording
WITHDRAWN published on 3.1.2000
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GB/T 6159.3-1994
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Micrographics--Vocabulary--Section 3: Film processing
WITHDRAWN published on 1.4.1994
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GB/T 6159.3-2003
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Micrographics—Vocabulary—Part 3:Film processing
WITHDRAWN published on 14.5.2003
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