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Standards GB - Chinese national standards - Page 5710
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 12491-1990
WITHDRAWN
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Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry
WITHDRAWN published on 21.9.1990
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GB/T 12492-1990
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Determination of cystine content of wool hydrolysates by colorimetry
WITHDRAWN published on 21.9.1990
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GB/T 12493-1990
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The classification and numbering of food additives
WITHDRAWN published on 4.10.1990
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GB/T 12495-1990
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Nomenclature for activated carbon type
WITHDRAWN published on 12.10.1990
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GB/T 12496.1-1990
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Test method of wooden activated carbon--Adsorption of caramel
WITHDRAWN published on 1.1.1990
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GB/T 12496.10-1990
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Test method of wooden activated carbon--Calcium and magnesium determination
WITHDRAWN published on 1.1.1990
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GB/T 12496.11-1990
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Test method of wooden activated carbon--Ash content
WITHDRAWN published on 1.1.1990
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GB/T 12496.12-1990
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Test method of wooden activated carbon--Acid-soluble substance
WITHDRAWN published on 1.1.1990
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GB/T 12496.13-1990
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Test method of wooden activated carbon--Heavy metals content
WITHDRAWN published on 1.1.1990
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GB/T 12496.14-1990
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Test method of wooden activated carbon--Zinc salt
WITHDRAWN published on 1.1.1990
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