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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
Household microwave oven—Methods for measuring performance
WITHDRAWN published on 26.6.2008
Selected format:Air cleaner
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WITHDRAWN published on 30.12.2008
Selected format:Air cleaner
WITHDRAWN published on 15.9.2015
Selected format:Surge protective devices connected to low-voltage power distribution systems—Part 1:Performance requirements and testing methods
WITHDRAWN published on 5.8.2002
Selected format:Low-voltage surge protective devices—Part 1:Surge protective devices connected to low-voltage power distribution systems—Requirements and tests
WITHDRAWN published on 30.12.2011
Selected format:Surge protective devices connected to low-voltage power distribution systems—Part 12:Selection and application principles
WITHDRAWN published on 15.2.2006
Selected format:Low-voltage surge protective devices—Part 12:Surge protective devices connected tolow-voltage power distribution systems—Selection and application principles
WITHDRAWN published on 24.6.2014
Selected format:Low-voltage surge protective devices—Part21:Surge protective devices connected to telecommunications and signalling networks—Performance requirements and testing methods
WITHDRAWN published on 4.2.2004
Selected format:Low-voltage surge protective devices—Part 22:surge protective devices connected to telecommunications and signalling networks—Selection and application principles
WITHDRAWN published on 31.12.2008
Selected format:Latest update: 2025-07-05 (Number of items: 2 207 347)
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