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Standards GB - Chinese national standards - Page 8582
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 7406-1987
WITHDRAWN
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Test methods for electroheating installations with electron guns
WITHDRAWN published on 13.3.1987
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GB 7407-1987
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WITHDRAWN published on 1.1.1987
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GB/T 7407-1997
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Codes for China and world main shipping trade ports
WITHDRAWN published on 4.7.1997
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GB/T 7407-2008
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Codes for China and world main shipping trade ports
WITHDRAWN published on 18.6.2008
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GB/T 7407-2015
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Codes for China and world main shipping trade ports
WITHDRAWN published on 3.7.2015
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GB 7408-1987
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numbering of weeks
WITHDRAWN published on 1.1.1987
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GB/T 7408-1994
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Data elements and interchange formats—Information interchange—Representation of dates and times
WITHDRAWN published on 6.12.1994
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GB/T 7408-2005
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Data elements and interchange formats—Information interchange—Representation of dates and times
WITHDRAWN published on 28.3.2005
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GB 7409-1987
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Fundamental requirements of excitation systems for large and medium synchronous generator
WITHDRAWN published on 1.1.1987
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GB/T 7409.1-1997
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Excitation system for synchronous electrical machines—Definitions
WITHDRAWN published on 10.4.1997
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