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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
Terminology for telecommunications—Transmission lines and waveguides
WITHDRAWN published on 5.12.1993
Selected format:Terminology for telecommunications—Dependability and quality of service
WITHDRAWN published on 5.12.1993
Selected format:Terminology for telecommunications—Switching
WITHDRAWN published on 5.12.1993
Selected format:Terminology for telecommunications—Space radio communication
WITHDRAWN published on 5.12.1993
Selected format:Terminology for telecommunications—Oscillations,signals and related devices
WITHDRAWN published on 5.12.1993
Selected format:Terminology for telecommunications—Radio wave propagation
WITHDRAWN published on 5.12.1993
Selected format:Safety rules for port floating crane
WITHDRAWN published on 10.12.1993
Selected format:Specifications for the operation of hook used in the port cargo handling
WITHDRAWN published on 10.12.1993
Selected format:Specification for the operation of the swing used in the port cargo handling
WITHDRAWN published on 10.12.1993
Selected format:Specifications for the operation of chain slings used in the port cargo handling
WITHDRAWN published on 10.12.1993
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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