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Standards GB - Chinese national standards - Page 419
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 14506.21-2010
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Methods for chemical analysis of silicate rocks - Part 21: Determination of nickel and cobalt content
Standard published on 10.11.2010
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GB/T 14506.22-2010
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Methods for chemical analysis of silicate rocks—Part 22:Determination of vanadium content
Standard published on 10.11.2010
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GB/T 14506.23-2010
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Methods for chemical analysis of silicate rocks—Part 23:Determination of chromium content
Standard published on 10.11.2010
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GB/T 14506.24-2010
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Methods for chemical analysis of silicate rocks - Part 24: Determination of cadmium content
Standard published on 10.11.2010
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GB/T 14506.25-2010
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Methods for chemical analysis of silicate rocks - Part 25: Determination of molybdenum and tungsten content
Standard published on 10.11.2010
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GB/T 14506.26-2010
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Methods for chemical analysis of silicate rocks—Part 26:Determination of cobalt content
Standard published on 10.11.2010
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GB/T 14506.27-2010
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Methods for chemical analysis of silicate rocks—Part 27:Determination of nickel content
Standard published on 10.11.2010
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GB/T 14506.28-2010
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Methods for chemical analysis of silicate rocks - Part 28: Determination of 16 major and minor elements content
Standard published on 10.11.2010
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GB/T 14506.29-2010
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Methods for chemical analysis of silicate rocks - Part 29: Determination of 22 elements including rare earth elements
Standard published on 10.11.2010
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GB/T 14506.3-2010
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Methods for chemical analysis of silicate rocks - Part 3: Determination of silicon dioxide content
Standard published on 10.11.2010
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