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Standards GB - Chinese national standards - Page 5703
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 12453-1990
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Information processing systems—Open systems interconnection—Transport service definition
WITHDRAWN published on 30.8.1990
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GB/T 12454-1990
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A method of evaluating the visual environment
WITHDRAWN published on 31.7.1990
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GB/T 12454-2008
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A method of evaluating the visual environment
WITHDRAWN published on 16.7.2008
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GB/T 12455-1990
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The rationality of electricity usage in guesthouse and hotel
WITHDRAWN published on 15.10.1990
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GB/T 12456-1990
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Method for determination of total acid in foods
WITHDRAWN published on 2.8.1990
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GB/T 12456-2008
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Determination of total acid in foods
WITHDRAWN published on 25.6.2008
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GB/T 12457-1990
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Method for determination of sodium chloride in foods
WITHDRAWN published on 2.8.1990
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GB/T 12457-2008
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Determination of sodium chloride in foods
WITHDRAWN published on 25.6.2008
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GB/T 12458-1990
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Mechanical coupling--Classification
WITHDRAWN published on 21.8.1990
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GB/T 12458-2003
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Coupling—Classification
WITHDRAWN published on 29.4.2003
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