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Standards GB - Chinese national standards - Page 7622
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 4677.17-1988
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Test method for insulation resistance within inner layers of multilayer printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.18-1988
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Test method for insulation resistance between layers of multilayer printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.19-1988
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Test methods for electrical integrity of printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.2-1984
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Micro-resistance test method of plating thickness of plated through holes for printed boards
WITHDRAWN published on 25.7.1984
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GB/T 4677.20-1988
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Test method for plating adhesion of printed boards--Burnishing
WITHDRAWN published on 24.3.1988
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GB/T 4677.21-1988
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Test method for plating porosity of printed boards--the gas exposure method
WITHDRAWN published on 24.3.1988
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GB/T 4677.22-1988
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Test methods for surface ionic contamination of printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.23-1988
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Test method for flammability of printed boards
WITHDRAWN published on 24.3.1988
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GB/T 4677.3-1984
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Test methods of pull strength for printed boards
WITHDRAWN published on 25.7.1984
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GB/T 4677.4-1984
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Test methods of peel strength for printed boards
WITHDRAWN published on 25.7.1984
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