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Standards GB - Chinese national standards - Page 8519
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 6548-1986
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WITHDRAWN published on 1.1.1986
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GB/T 6548-1998
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Corrugated fibreboard—Determination of ply adhesive strength
WITHDRAWN published on 19.5.1998
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GB 6549-1996
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Potassium chloride
WITHDRAWN published on 2.12.1996
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GB 6549.1-1986
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Potassium chloride--Determination of potassium content--Potassium tetraphenylborate gravimetric method
WITHDRAWN published on 1.1.1986
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GB 6549.2-1986
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Potassium chloride--Determination of chlorine content--Mercurimetric method and silvermetric method
WITHDRAWN published on 1.1.1986
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GB 6549.3-1986
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Potassium chloride--Determination of sodium content--Flame emission spectrometry
WITHDRAWN published on 1.1.1986
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GB 6549.4-1986
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Potassium chloride--Determination of calcium and magnesium contents--Atomic absorption spectrometry and EDTA volumetric method
WITHDRAWN published on 1.1.1986
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GB 6549.5-1986
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Potassium chloride--Determination of sulfate ion content--Barium sulfate gravimetric and spectrophotometric methods
WITHDRAWN published on 1.1.1986
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GB 6549.6-1986
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Potassium chloride--Determination of moisture content--Gravimetric method
WITHDRAWN published on 1.1.1986
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GB 6549.7-1986
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Potassium chloride--Determination of water insoluble material content--Gravimetric method
WITHDRAWN published on 1.1.1986
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