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Standards GB - Chinese national standards - Page 464
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 14949.3-1994
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Manganese ores--Determination of barium oxide content
Standard published on 18.1.1994
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GB/T 14949.4-1994
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Manganese ores--Determination of vanadium content
Standard published on 18.1.1994
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GB/T 14949.5-2021
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Manganese oresDetermination of titanium contentDiantipyrylmethane spectrophotometric method
Standard published on 21.5.2021
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GB/T 14949.6-2021
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Manganese ores—Determination of copper, lead and zinc content—Flame atomic absorption spectrometric method
Standard published on 11.10.2021
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GB/T 14949.7-2024
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Manganese ores—Determination of sodium and potassium content—Flame atomic absorption spectrometric method
Standard published on 25.4.2024
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GB/T 14949.8-2018
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Manganese ores—Determination of hygroscopic moisture content—Gravimetric method
Standard published on 17.9.2018
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GB/T 14949.9-1994
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Manganese ores--Determination of sulphur contents
Standard published on 18.1.1994
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GB 1495-2002
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Limits and measurement methods for noise emitted by accelerating motor vehicles
Standard published on 4.1.2002
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GB/T 14950-2009
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Terms of photogrammetry and remote sensing
Standard published on 6.2.2009
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GB/T 14951-2023
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Measurement method of fuel saving technology for automobiles
Standard published on 23.5.2023
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