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Standards GB - Chinese national standards - Page 5211
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 8302-2013
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Tea—Sampling
Standard published on 31.12.2013
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GB/T 8303-2013
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Tea—Preparation of ground sample and determination of dry matter content
Standard published on 31.12.2013
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GB/T 8305-2013
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Tea—Determination of water extracts content
Standard published on 31.12.2013
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GB/T 8309-2013
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Tea—Determination of alkalinity of water-soluble ash content
Standard published on 31.12.2013
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GB/T 831-1988
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Slotted shoulder screws
Standard published on 24.6.1988
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GB/T 8310-2013
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Tea—Determination of crude fibre content
Standard published on 31.12.2013
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GB/T 8311-2013
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TeaDetermination of dust and broken content
Standard published on 31.12.2013
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GB/T 8312-2013
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Tea—Determination of caffeine content
Standard published on 31.12.2013
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GB/T 8313-2018
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Determination of total polyphenols and catechins content in tea
Standard published on 13.7.2018
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GB/T 8314-2013
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Tea—Determination of free amino acids content
Standard published on 31.12.2013
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