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Standards GB - Chinese national standards - Page 7549
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 3254.4-1998
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Antimony trioxide—Determination of copper content
WITHDRAWN published on 15.7.1998
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GB/T 3254.5-1998
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Antimony trioxide—Determination of iron content
WITHDRAWN published on 15.7.1998
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GB/T 3254.6-1998
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Antimony trioxide—Determination of selenium content
WITHDRAWN published on 15.7.1998
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GB 3255.1-1982
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Chemical analysis of antimony trisulfide--The bromate volumetric method for determination of antimony
WITHDRAWN published on 1.1.1982
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GB 3255.2-1982
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Chemical analysis of antimony trisulfide--The barium sulfate gravimetric method for determination of combined sulfur
WITHDRAWN published on 1.1.1982
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GB 3255.3-1982
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Chemical analysis of antimony trisulfide--The combustion-iodine volumetric method for determination of free sulfur
WITHDRAWN published on 1.1.1982
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GB 3255.4-1982
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Chemical analysis of antimony trisulfide--Gravimetric method for determination of aqua-regia insolubles
WITHDRAWN published on 1.1.1982
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GB 3255.5-1982
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Chemical analysis of antimony trisulfide--Gravimetric method for determination of hydrochloric acid insolubles
WITHDRAWN published on 1.1.1982
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GB/T 3256.1-1982
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Chemical analysisof zirconium powder for electro-vacuum uses--The gravimetric method for determination of total zirconium and active zirconium
WITHDRAWN published on 21.6.1982
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GB/T 3256.2-1982
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Chemical analysisof zirconium powder for electro-vacuum uses--The sulfosalicylic acid photometric method for determination of iron
WITHDRAWN published on 21.6.1982
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