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Standards GB - Chinese national standards - Page 8712
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 8147-1987
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Sodium ethyl xanthate
WITHDRAWN published on 1.1.1987
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GB 8148-1987
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Sodium n-butyl xanthate synthetic
WITHDRAWN published on 1.1.1987
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GB 8149-1987
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Ethyl thiocarbamate
WITHDRAWN published on 1.1.1987
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GB 8150.1-1987
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Methods for chemical analysis of xanthates--The lead-acetate titration method for determination of xanthate content
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GB 8150.2-1987
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Methods for chemical analysis of xanthates--The acetic acid titration method for determination of free alkali content
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GB 8150.3-1987
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Methods for chemical analysis of xanthates--The infrared drying method for determination of moisture and volatile matter content
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GB/T 8151.1-2000
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Methods for chemical analysis of zinc concentrates—Determination of zinc content
WITHDRAWN published on 16.2.2000
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GB/T 8151.10-2000
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Methods for chemical analysis of zinc concentrates—Determination of tin content
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GB/T 8151.11-2000
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Methods for chemical analysis of zinc concentrates—Determination of antimony content
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GB/T 8151.12-2000
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Methods for chemical analysis of zinc concentrates—Determination of silver content
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