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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
Generic specification of spectrum analyzers
WITHDRAWN published on 31.3.1989
Selected format:Test methods of spectrum analyzers
WITHDRAWN published on 30.6.1989
Selected format:Terminology for electronic measuring instruments
WITHDRAWN published on 31.3.1989
Selected format:Temperature profile for electronic measuring instruments
WITHDRAWN published on 31.3.1989
Selected format:265 Radio altimeter
WITHDRAWN published on 31.3.1989
Selected format:General specification for radio altimeters
WITHDRAWN published on 31.3.1989
Selected format:Reciprocating internal combustion engines—General technical specifications
WITHDRAWN published on 12.1.1987
Selected format:Small and medium power internal combustion engines—Part 1:General requirements
WITHDRAWN published on 25.6.2007
Selected format:Small and medium power internal combustion engines—Part 2:Test methods
WITHDRAWN published on 25.6.2007
Selected format:The criteria of quality-control and classification of electric lamps
WITHDRAWN published on 1.1.1989
Selected format:Latest update: 2026-02-27 (Number of items: 2 263 604)
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