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Standards GB - Chinese national standards - Page 7768
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 4581.9-1984
WITHDRAWN
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Alunite ores--Determination of silicon content--Gravimetric method
WITHDRAWN published on 1.1.1984
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GB 4583-1984
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Measurement of noise emitted by electric tools--Engineering method
WITHDRAWN published on 1.1.1984
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GB/T 4583-1995
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Measurement of noise emitted by electric tools—Engineering method
WITHDRAWN published on 6.7.1995
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GB 4584-1984
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Technical requirements for light type safety device used for the presses
WITHDRAWN published on 20.7.1984
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GB/T 4584-2007
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Specification of active optoelectronic protective devices for presses
WITHDRAWN published on 8.6.2007
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GB/T 4585.1-1984
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Artificial pollution tests on high-voltage insulators to be used on a.c.systems Salt-fog method
WITHDRAWN published on 23.7.1984
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GB/T 4585.2-1991
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Artificial pollution tests on high-voltage insulators to be used on a.c.systems solid-layer method
WITHDRAWN published on 6.6.1991
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GB 4586-1984
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Measuring methods for field-effect transistors
WITHDRAWN published on 1.1.1984
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GB 4587-1984
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Measuring methods for bipolar transistors
WITHDRAWN published on 1.1.1984
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GB/T 4587-1994
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Semiconductor discrete devices and integrated circuits—Part 7:Bipolar transistors
WITHDRAWN published on 30.12.1994
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