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Standards GB - Chinese national standards - Page 5418
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 10522-1989
WITHDRAWN
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of loss on ignition on dried sample
WITHDRAWN published on 1.1.1989
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GB 10523-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of pH value of an aqueous suspension
WITHDRAWN published on 1.1.1989
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GB 10524-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of total copper content
WITHDRAWN published on 1.1.1989
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GB 10525-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of total manganese content
WITHDRAWN published on 1.1.1989
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GB 10526-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of total iron content
WITHDRAWN published on 1.1.1989
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GB 10527-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of refractive index
WITHDRAWN published on 1.1.1989
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GB 10528-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of dibutylphthalate absorption number
WITHDRAWN published on 1.1.1989
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GB 10529-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Determination of specific surface area--Nitrogen absorption method
WITHDRAWN published on 1.1.1989
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GB 10530-1989
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Rubber compounding ingredients--Silica, precipitated, hydrated--Packing, storing, transporting sampling, certificating and accepting
WITHDRAWN published on 1.1.1989
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GB 10531-1989
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Water treatment chemicals—Ferrous sulphate
WITHDRAWN published on 22.3.1989
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