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Standards GB - Chinese national standards - Page 7614
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 4325.28-1984
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Methods for chemical analysis of molybdenum--The tetraphenyl arsonium chloride hydrochloride-thiocyanate photometric method for the determination of tungsten content
WITHDRAWN published on 21.4.1984
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GB/T 4325.3-1984
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Methods for chemical analysis of molybdenum--The polyethylene glycol octyl phenylether-phenylfluorone photometric method for the determination of tin content
WITHDRAWN published on 12.4.1984
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GB/T 4325.4-1984
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Methods for chemical analysis of molybdenum--The malachite green photometric method for the determination of antimony content
WITHDRAWN published on 12.4.1984
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GB/T 4325.5-1984
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Methods for chemical analysis of molybdenum--The molybdenum blue photometric method for the determination of arsenic content
WITHDRAWN published on 12.4.1984
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GB/T 4325.6-1984
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Methods for chemical analysisof molybdenum--The ortho-phenanthroline photometric method for the determination of iron content
WITHDRAWN published on 12.4.1984
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GB/T 4325.7-1984
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Methods for chemical analysis of molybdenum--The 5-Cl-PADAB photometric method for the determination of cobalt content
WITHDRAWN published on 12.4.1984
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GB/T 4325.8-1984
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Methods for chemical analysis of molybdenum--The dimethylglyoxime photometric method for the determination of nickel content
WITHDRAWN published on 12.4.1984
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GB/T 4325.9-1984
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Methods for chemical analysis of molybdenum--The dimethylglyoxime gravimetric method for the determination of nickel content
WITHDRAWN published on 12.4.1984
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GB/T 4326-1984
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Extrinsic semiconductor single crystals—measurement of Hall mobility and Hall coefficient
WITHDRAWN published on 12.4.1984
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GB/T 4327-1993
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Equipment for fire protection and fire fighting graphical symbols for fire protection plans-specification
WITHDRAWN published on 19.8.1993
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