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Standards GB - Chinese national standards - Page 8791
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 9000.11-1988
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Determination of CaO SrO AND MgO in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
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GB 9000.12-1988
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Determination of ZnO PbO Al2O3 and Sb2O3 in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
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GB 9000.13-1988
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Determination of Co2O3 NiO AND MnO2 in electronic glass by atomic absorption
WITHDRAWN published on 1.1.1988
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GB 9000.14-1988
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Determination of iron oxide and titania in electronic glass by photometric method
WITHDRAWN published on 1.1.1988
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GB 9000.15-1988
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Determination of zirconia in electronic glass
WITHDRAWN published on 1.1.1988
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GB 9000.16-1988
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Determination of arsenic (As2O3) in electronic glass
WITHDRAWN published on 1.1.1988
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GB 9000.17-1988
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Determination of manganese dioxide in electronic glass by the potassium periodate oxidation method
WITHDRAWN published on 1.1.1988
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GB 9000.2-1988
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Determination of silica (SiO2) in electronic glass
WITHDRAWN published on 1.1.1988
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GB 9000.3-1988
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Determination of boron oxide (B2O3) in electronic glass
WITHDRAWN published on 1.1.1988
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GB 9000.4-1988
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Determination of fluorine in electronic glass by specific ion electrode measurement
WITHDRAWN published on 1.1.1988
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