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Standards GB - Chinese national standards - Page 5294
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 8570.7-2010
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Determination of liquefied anhydrous ammonia - Part 7: Iron content - o-Phenathroline spectrophotometric method
Standard published on 26.9.2010
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GB/T 8571-2008
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Preparation of laboratory samples for compound fertilizers
Standard published on 17.6.2008
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GB/T 8572-2010
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Determination of total nitrogen content for compound fertilizers titrimetric method after distillation
Standard published on 26.9.2010
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GB/T 8573-2017
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Determination of available phosphorus content for compound fertilizers
Standard published on 29.12.2017
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GB/T 8574-2024
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Determination of potassium content for compound fertilizers
Standard published on 29.9.2024
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GB/T 8576-2010
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Determination of free water for compound fertilizers - Vacuum oven method
Standard published on 26.9.2010
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GB/T 8577-2010
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Determination of free water for compound fertilizers - Karl Fischer method
Standard published on 26.9.2010
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GB/T 858-1988
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Tab washers for round nut
Standard published on 6.2.1988
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GB/T 8582-2008
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Terminology for mechanical structures of electrotechnical and electronic equipment
Standard published on 19.6.2008
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GB/T 8586-2023
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Technical specification for operational frequency distribution and anti-interference of sound of fishfinders
Standard published on 27.11.2023
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