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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
Series and products for CMOS semiconductor integrated circuits--Products of series 54/74 HC
WITHDRAWN published on 31.3.1989
Selected format:Series and products for CMOS semiconductor integrated circuits--Products of series 54/74 HCT
WITHDRAWN published on 31.3.1989
Selected format:Sectional specification for film integrated circuits and hybrid film integrated circuits on the basis of the qualification approval procedure
WITHDRAWN published on 31.3.1989
Selected format:Letter symbols for discrete semiconductor devices
WITHDRAWN published on 1.1.1989
Selected format:Code for design of close circuit televsion system
WITHDRAWN published on 1.1.1987
Selected format:Internal combustion engines—Cast iron wet type cylinder liners—Specification
WITHDRAWN published on 22.3.1993
Selected format:Geometric conditions for measuring transmission density
WITHDRAWN published on 28.6.1989
Selected format:Spectral conditions for measuring photography density
WITHDRAWN published on 28.6.1989
Selected format:Diagnostic criteria and principles of management of occupational cataract
WITHDRAWN published on 25.3.1989
Selected format:Diagnostic criteria and principles of management of occupational acute tetraethyl lead poisoning
WITHDRAWN published on 25.3.1989
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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