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Standards GB - Chinese national standards - Page 7610
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 9489.2-1988
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Determination of CaOMgOSiO2Fe2O3TiO2 in alundum powder by ICP-AES
WITHDRAWN published on 27.6.1988
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GB/T 9489.3-1988
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Determination of Fe2O3CaOMgONa2O and K2O in alundum powder byatomic absorption spectrophotometry
WITHDRAWN published on 27.6.1988
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GB/T 9489.4-1988
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Determination of Al2O3 in alundum powder by complexometric titration
WITHDRAWN published on 27.6.1988
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GB/T 9489.5-1988
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Determination of SiO2 in alundum powderby colorimetry
WITHDRAWN published on 27.6.1988
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GB/T 9489.6-1988
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Determination of TiO2 in alundum powderby colorimetry
WITHDRAWN published on 27.6.1988
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GB/T 9489.7-1988
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Determination of chloride in alundum powder by visual turbidimetry
WITHDRAWN published on 27.6.1988
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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WITHDRAWN published on 27.6.1988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/T 9491-2002
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Liquid flux for soldering(Rosin base)
WITHDRAWN published on 9.8.2002
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GB/T 95-1985
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Plain washers--Product grade C
WITHDRAWN published on 1.8.1985
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