Standards GB - Chinese national standards - Page 338

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 13883-2023

Determination of selenium in feeds

Standard published on 6.8.2023

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GB/T 13884-2018

Determination of cobalt in feeds—Atomic absorption spectrometry

Standard published on 14.5.2018

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GB/T 13885-2017

Determination of the contents of calcium, copper, iron, magnesium, manganese, potassium, sodium and zinc in feeds—Method using atomic absorption spectrometry

Standard published on 1.11.2017

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GB 13887-2008

Safety codes for cold pressing

Standard published on 11.12.2008

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