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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
Measuring methods of electrical properties of voltage-tunable magnetrons
WITHDRAWN published on 1.1.1988
Selected format:(Cathode ray tube electrostatic deflection pole naming)
WITHDRAWN published on 1.1.1988
Selected format:Methods of accelerated life test of fluorescent display tubes
WITHDRAWN published on 29.6.1988
Selected format:Blank detail specification for metal-ceramic transmitting tubes dissipation over 1kW
WITHDRAWN published on 29.6.1988
Selected format:Methods of measurement of Geiger-muller counter tubes
WITHDRAWN published on 29.6.1988
Selected format:-
WITHDRAWN published on 1.1.1988
Selected format:Specifications for ring--Circlips
WITHDRAWN published on 2.7.1986
Selected format:Detail specification for electronic component--Semiconductor integrated circuit for TV-CD5435CP horizontal and vertical sweep circuit
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic component--Semiconductor integrated circuit for TV-CD5132CP--Picture IF amplifier
WITHDRAWN published on 1.1.1988
Selected format:Detail specification for electronic component--Semiconductor integrated circuit for TV-CD5622CP PAL system chrominance signal processing circuit
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2026-03-11 (Number of items: 2 266 192)
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