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Standards GB - Chinese national standards - Page 7627
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 4375.10-1984
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Methods for chemical analysis of gallium--The atomic absorption spectrophotometric method for the determination of zinc content
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GB/T 4375.11-1984
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Methods for chemical analysis of gallium--The cold vapor atomic absorption spectrophotometric method for the determination of mercury content
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GB/T 4375.12-1984
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Methods for chemical analysis of gallium--The spectro-chemical method for the determination ofleadcoppernickelaluminiumindium and zinc contents
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GB/T 4375.2-1984
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Methods for chemical analysis of gallium--The 4-(2-pyridylazo)-resorcinol photometric method for the determination of lead content
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GB/T 4375.3-1984
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Methods for chemical analysis of gallium--The chromazurol S-tetradecyl pyridine bromide photometric method for the determination of aluminium content
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GB/T 4375.4-1984
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Methods for chemical analysis of gallium--The 47-diphenyl-110-phenanthroline photometric method for the determination of iron content
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GB/T 4375.5-1984
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Methods for chemical analysis of gallium--The N2O-C2H2 flame atomic absorption spectrophotometric method for the determination of calcium content
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GB/T 4375.6-1984
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Methods for chemical analysis of gallium--The salicylfluorone cetyltrimethyl ammonium bromide photometric method for the determination of tin content
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GB/T 4375.7-1984
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Methods for chemical analysis of gallium--The molybdenum blue photometric method for the determination of silicon content
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GB/T 4375.8-1984
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Methods for chemical analysis of gallium--The ethyl violet photometric method for the determination of indium content
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