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Standards GB - Chinese national standards - Page 6892
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 21198.1-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 1:Platinum jewellery alloys—Determination of platinum—Method using a solution with yttrium as internal standard element
WITHDRAWN published on 12.11.2007
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GB/T 21198.2-2007
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Determination of precious metals in precious metals jewellery alloys--Method using ICP spectrometry—Part 2:Platinum jewellery alloys—Determination of platinum—Method using the intensity ratios of all minor constituents with reference to platinum
WITHDRAWN published on 12.11.2007
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GB/T 21198.3-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 3:Palladium jewellery alloys—Determination of palladium—Method using a solution with yttrium as internal standard element
WITHDRAWN published on 12.11.2007
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GB/T 21198.4-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 4:999‰precious metals jewellery alloys—Determination of precious metals—Difference method
WITHDRAWN published on 12.11.2007
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GB/T 21198.5-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 5:999‰ silver jewellery alloys—Determination of silver—Difference method
WITHDRAWN published on 12.11.2007
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GB/T 21198.6-2007
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Determination of precious metals in precious metals jewellery alloys—Method using ICP spectrometry—Part 6:Difference method
WITHDRAWN published on 12.11.2007
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GB/T 21199-2007
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Dry mono component toner for laser printer
WITHDRAWN published on 14.11.2007
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GBN 212-1983
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WITHDRAWN published on 1.1.1983
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GB/T 212-1991
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Proximate analysis of coal
WITHDRAWN published on 1.1.1991
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GB/T 212-2001
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Proximate analysis of coal
WITHDRAWN published on 12.11.2001
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