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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 for thyristor. Gate turn-off thyristor
WITHDRAWN published on 7.12.1994
Selected format:Mininum performance requirements on high fidelity FM radio tuners
WITHDRAWN published on 6.12.1994
Selected format:Series and products of high frequency wideband amplifiers for hybrid integrated circuits used in cabled distribution systems
WITHDRAWN published on 6.12.1994
Selected format:Mechanical and climatic test methods for microcircuit modules
WITHDRAWN published on 6.12.1994
Selected format:Coniferous sawn timber
WITHDRAWN published on 8.12.1995
Selected format:Coniferous sawn timber
WITHDRAWN published on 23.2.2009
Selected format:Coniferous sawn timber--Species--Sizes--Tolerance
WITHDRAWN published on 1.1.1984
Selected format:Coniferous sawn timber--Grading
WITHDRAWN published on 1.1.1984
Selected format:-
WITHDRAWN published on 1.1.1987
Selected format:Generic specification for pyroelectric television cameras
WITHDRAWN published on 6.12.1994
Selected format:Latest update: 2026-01-21 (Number of items: 2 257 297)
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