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Standards GB - Chinese national standards - Page 8660
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 7835-1987
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Determination of forest soil water-physical properties
WITHDRAWN published on 1.1.1987
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GB 7836-1987
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Determination of forest soil maximum hygroscopic water
WITHDRAWN published on 1.1.1987
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GB 7837-1987
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Determination of forest soil permanent wilting percentage (wilting coefficient)
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GB 7838-1987
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Determination of forest soil permeability
WITHDRAWN published on 1.1.1987
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GB 7839-1987
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Determination of forest soil temperature
WITHDRAWN published on 1.1.1987
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GB 7840-1987
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Determination of forest soil respiration
WITHDRAWN published on 1.1.1987
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GB 7841-1987
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Determination of carbon dioxide content of forest soil air
WITHDRAWN published on 1.1.1987
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GB 7842-1987
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Determination of oxygen content of forest soil solution
WITHDRAWN published on 1.1.1987
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GB 7843-1987
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Determination of forest soil consistence
WITHDRAWN published on 1.1.1987
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GB 7844-1987
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Determination of forest soil specific gravity
WITHDRAWN published on 1.1.1987
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