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Standards GB - Chinese national standards - Page 8743
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 9620.1-1988
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(Electron Devices silver copper brazing material analysis. Iodometry determination of copper)
WITHDRAWN published on 1.1.1988
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GB 9620.2-1988
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(Electron Devices silver copper brazing material analysis. Lead, bismuth, zinc, cadmium, iron, magnesium, zirconium, tin and antimony-based)
WITHDRAWN published on 1.1.1988
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GB 9620.3-1988
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(Electron Devices silver copper brazing material analysis. Catechol Violet - cetylpyridinium bromide spectrophotometry)
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GB 9620.4-1988
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(Electron Devices silver copper brazing material analysis. Atomic absorption spectrophotometry bismuth)
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GB 9620.5-1988
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(Electron Devices silver copper brazing material analysis. Antimony atomic absorption spectrophotometry)
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GB 9620.6-1988
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(Electron Devices silver copper brazing material analysis. Atomic absorption spectrophotometry Lead)
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GB 9620.7-1988
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(Electron Devices silver copper brazing material analysis. Atomic absorption spectrophotometry of iron, cadmium, zinc)
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GB 9620.8-1988
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(Electron Devices silver copper brazing material analysis. Magnesium by atomic absorption spectrophotometry)
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GB 9621.1-1988
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(Analytical methods for electronic devices bronze solder. EDTA volumetric method for the determination of copper)
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GB 9621.2-1988
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(Analysis method of an electronic device with a solder of gold-nickel. EDTA volumetric method for the determination of nickel)
WITHDRAWN published on 1.1.1988
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