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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
Winding wires—Test methods—Part 5:Electrical properties
WITHDRAWN published on 23.4.2008
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WITHDRAWN published on 1.1.1983
Selected format:Test methods for winding wires—Part 6:Thermal properties
WITHDRAWN published on 11.11.1999
Selected format:Winding wires—Test methods—Part 6:Thermal properties
WITHDRAWN published on 23.4.2008
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WITHDRAWN published on 1.1.1983
Selected format:Winding wires—Test methods—Part 7:Test procedure for the determination of the temperature index of enamelled winding wires
WITHDRAWN published on 19.3.2009
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WITHDRAWN published on 1.1.1983
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WITHDRAWN published on 1.1.1983
Selected format:Sealed radioactive sources--Classification
WITHDRAWN published on 1.1.1983
Selected format:Sealed radioactive sources—General requirements and classification
WITHDRAWN published on 24.3.2003
Selected format:Latest update: 2025-11-10 (Number of items: 2 243 715)
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