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Standards GB - Chinese national standards - Page 8834
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 9489.8-1988
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Methods for determination of carbon and sulphur in alundum powder
WITHDRAWN published on 27.6.1988
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GB/T 9489.9-1988
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Methods for determination of pH in alundum powder
WITHDRAWN published on 27.6.1988
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GB 9490-1988
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Designation for alundum powder for vacuum tubes
WITHDRAWN published on 1.1.1988
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GB 9491-1988
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Liquid flux for soldering
WITHDRAWN published on 1.1.1988
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GB/T 9491-2002
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Liquid flux for soldering(Rosin base)
WITHDRAWN published on 9.8.2002
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GB 9492-1988
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Detail specification for electronic component--Semiconductor green light emiting diodes for types FG341052 and FG343053
WITHDRAWN published on 1.1.1988
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GB 9493-1988
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Detail specification for electronic component--Semiconductor red light emiting diodes for types FG313052 FG314053 FG313054 and FG314055
WITHDRAWN published on 1.1.1988
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GB 9494-1988
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Detail specification for electronic component--Ambient-rated silicon rectifier diode for type 2CZ321
WITHDRAWN published on 1.1.1988
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GB 9495-1988
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Detail specification for electronic component--Ambient-rated silicon rectifier diode for type 2CZ322
WITHDRAWN published on 1.1.1988
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GB 9496-1988
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Detail specification for electronic component--Ambient-rated silicon rectifier diode for type 2CZ33
WITHDRAWN published on 1.1.1988
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