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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
Specification for low air pressure test chambers
WITHDRAWN published on 31.3.1989
Selected format:Tautband and suspension for electrical measuring instruments
WITHDRAWN published on 1.1.1989
Selected format:Dial and scale of electrical instruments
WITHDRAWN published on 31.3.1989
Selected format:General specification of optical components for the scale and surface defects
WITHDRAWN published on 31.3.1989
Selected format:Specifications for 16mm microfilm camera
WITHDRAWN published on 1.1.1989
Selected format:-
WITHDRAWN published on 1.1.1989
Selected format:Vacuum coating plant generic specification
WITHDRAWN published on 8.4.1999
Selected format:Laboratory pH meter
WITHDRAWN published on 31.3.1989
Selected format:Specifications of thermomagnetic oxygen analyzers
WITHDRAWN published on 1.1.1989
Selected format:Image quality of optical systems--Method of deter-mination
WITHDRAWN published on 31.3.1989
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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