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Standards GB - Chinese national standards - Page 7630
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 8309-2002
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Tea—Determination of alkalinity of water-soluble ash content
WITHDRAWN published on 17.6.2002
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GB/T 8310-1987
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Tea--Determination of crude fibre content
WITHDRAWN published on 19.11.1987
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GB/T 8310-2002
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Tea—Determination of crude fibre content
WITHDRAWN published on 17.6.2002
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GB/T 8311-1987
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Tea--Determination of dust and broken tea content
WITHDRAWN published on 19.11.1987
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GB/T 8311-2002
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Tea—Determination of dust and broken tea content
WITHDRAWN published on 17.6.2002
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GB/T 8312-1987
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Tea--Determination of caffeine content
WITHDRAWN published on 19.11.1987
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GB/T 8312-2002
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Tea—Determination of caffeine content
WITHDRAWN published on 17.6.2002
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GB/T 8313-1987
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Tea--Determination of tea polyphenols content
WITHDRAWN published on 19.11.1987
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GB/T 8313-2002
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Tea—Determination of tea polyphenols content
WITHDRAWN published on 17.6.2002
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GB/T 8313-2008
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Determination of total polyphenols and catechins content in tea
WITHDRAWN published on 4.5.2008
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