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Standards GB - Chinese national standards - Page 7621
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 4676-1984
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Method for sampling of conventional abrasive grains
WITHDRAWN published on 29.7.1984
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GB/T 4676-2003
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Abrasive grains—Sampling and splitting
WITHDRAWN published on 8.10.2003
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GB/T 4677.1-1984
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Test method of surface insulation resistance for printed boards
WITHDRAWN published on 25.7.1984
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GB/T 4677.10-1984
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Test method of solderability for printed boards
WITHDRAWN published on 25.7.1984
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GB/T 4677.11-1984
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Test methods of thermal shock for printed boards
WITHDRAWN published on 25.7.1984
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GB/T 4677.12-1988
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Test method of interconnection resistance for printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.13-1988
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Test method of change in resistance of plated-through holes-thermal cycling for printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.14-1988
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Test method of steam/oxygen accelerated ageing of printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.15-1988
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Test method for solvent and flux resistance of insulating coating on printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.16-1988
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General examination method for printed boards
WITHDRAWN published on 24.3.1988
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