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Standards GB - Chinese national standards - Page 7613
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 4325.19-1984
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Methods for chemical analysis of molybdenum--The diantipyrylmethane photometric method for the determination of titanium content
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GB/T 4325.2-1984
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Methods for chemical analysis of molybdenum--The potassium iodide-Brucine photometric method for thedetermination of bismuth content
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GB/T 4325.20-1984
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Methods for chemical analysis of molybdenum--The N-benzoyl-N-phenylhydroxylamine photometric method for the determination of vanadium content
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GB/T 4325.21-1984
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Methods for chemical analysis of molybdenum--The diphenylcarbazide photometric method for the determination of chromium content
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GB/T 4325.22-1984
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Methods for chemical analysis ofmolybdenum--The formaldoxime photometric method for the determination of manganese content
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GB/T 4325.23-1984
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Methods for chemical analysis of molybdenum--The combustion-conductometric titration method for the determination of sulphur content
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GB/T 4325.24-1984
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Methods for chemical analysis of molybdenum--The molybdenum blue photometric method for the determination of phosphorus content
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GB/T 4325.25-1984
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Methods for chemical analysis of molybdenum--The inert gas fusion-coulometric titration method for the determination of oxygen content
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GB/T 4325.26-1984
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Methods for chemical analysis of molybdenum--The Nessler reagent photometric method for the determination of nitrogen content
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GB/T 4325.27-1984
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Methods for chemical analysisof molybdenum--The combustion-coulometric titration method for the determination of carbon content
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