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Standards GB - Chinese national standards - Page 8315
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 5870.2-1986
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Methods for chemical analysis of beryllium concentrates-beryl--The EDTA volumetric method for the determination of ferric sesquioxide content
WITHDRAWN published on 1.1.1986
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GB 5870.3-1986
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Methods for chemical analysis of beryllium concentrates-beryl--The molybdenum blue photometric method for the determination of phosphorus content
WITHDRAWN published on 1.1.1986
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GB 5870.4-1986
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Methods for chemical analysis of beryllium concentrates-beryl--The atomic absorption spectrophotometric method for determination of lithium oxide content
WITHDRAWN published on 1.1.1986
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GB 5870.5-1986
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Methods for chemical analysis of beryllium concentrates-beryl--The ion selective electrode method for the determination of fluorine content
WITHDRAWN published on 1.1.1986
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GB 5870.6-1986
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Methods for chemical analysis of beryllium concentrates-beryl--The atomic absorption spectrophotometric method for the determination of calcium oxide content
WITHDRAWN published on 1.1.1986
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GB 5870.7-1986
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Methods for chemical analysis of beryllium concentrates-beryl--The gravimetric method for the determination of water content
WITHDRAWN published on 1.1.1986
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GB/T 5871-1986
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Method for spectrographic analysis of aluminium and its alloys
WITHDRAWN published on 22.2.1986
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GB 5872-1986
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Specification for packaging of electrical micro-machine for automatic control system
WITHDRAWN published on 1.1.1986
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GB 5873-1986
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Detail specification for electronic components--Fixed low-power non-wire-wound resistors--Type RJ14 metal film fixed resistors--Assessment level E
WITHDRAWN published on 1.1.1986
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GB 5875-1986
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WITHDRAWN published on 1.1.1986
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