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Standards GB - Chinese national standards - Page 8744
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 9621.3-1988
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(Analytical methods for electronic devices nickel bronze and gold solder. Dithizone spectrophotometric determination of lead)
WITHDRAWN published on 1.1.1988
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GB 9621.4-1988
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(Analytical methods for electronic devices nickel bronze and gold solder. Determination of phosphorus phosphorus molybdenum blue spectrophotometric)
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GB 9621.5-1988
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(Analytical methods for electronic devices nickel bronze and gold solder. Zinc by atomic absorption spectrophotometry)
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GB 9622.1-1988
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Test method for density of electronic glass by the sink--Float comparator
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GB 9622.10-1988
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Test method for d. c. disruptive strength of electronic glass
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GB 9622.11-1988
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Test method for chemical stability to resist water of electronic glass
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GB 9622.2-1988
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Test method for average linear thermal expansion of electronic glass
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GB 9622.3-1988
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Test method for thermal shock of electronic glass
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GB 9622.4-1988
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Test method for softening point of electronic glass
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GB 9622.5-1988
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Test method for annealing point and strain point of electronic glass
WITHDRAWN published on 1.1.1988
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