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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
Type specification for variable trimmer capacitors--Type B in electronic equipments
Standard published on 10.4.1986
Selected format:Type specification for variable preset capacitors--Type C in electronic equipments
Standard published on 10.4.1986
Selected format:General specification for space-charge controlled tubes
Standard published on 2.11.2001
Selected format:Blank detail specification forindustrial heating triodes
Standard published on 14.4.1986
Selected format:Blank detail specification for transmitting tubes
Standard published on 11.9.2015
Selected format:Blank detail specification for disk seal power tubes
Standard published on 14.4.1986
Selected format:Chemical reagent - Nitric acid
Standard published on 3.11.2006
Selected format:Fixed capacitors for use in electronic equipment--Part 5:Sectional specification--Fixed mica dielectric d.c.capacitors witha rated voltage not exceeding 3000V--Selection of methods of test and generalrequirements
Standard published on 2.11.1998
Selected format:Fixed capacitors for use in electronic equipment--Part 5:Blank detail specification--Fixed mica dielectric d.c.capacitors witha rated voltage not exceeding 3000V--Assessment level E
Standard published on 2.11.1998
Selected format:Latest update: 2026-06-22 (Number of items: 2 284 351)
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