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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
Test method for barium film distribution ofnitrogen-doped getter
WITHDRAWN published on 25.6.1988
Selected format:Test method for gettering properties ofbarium flash getter
WITHDRAWN published on 25.6.1988
Selected format:Test method for gettering properties ofnon-evaporable getter
WITHDRAWN published on 25.6.1988
Selected format:Test method for amount of filling getter
WITHDRAWN published on 25.6.1988
Selected format:Detail specification for electronic components--Ambient-rated transistor for type 3CG844 silicon PNP for high frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components--Ambient-rated transistor for type 3CG778 silicon PNP for high frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components--Ambient-rated transistor for type 3CG778 silicon PNP for high frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components--Ambient-rated transistor for type 3DG2271 silicon NPN for high frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components--Case-rated transistor for type 3DD401 silicon NPN for low frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic components--Case-rated transistor for type 3CD546 silicon PNP for low frequency amplification
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2025-12-23 (Number of items: 2 253 013)
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