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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
Shipboard radio-frequency cables--General
WITHDRAWN published on 11.6.1988
Selected format:Shipboard radio-frequency cables--Radio-frequency coaxial cables with polyethelene insulated copper conductor, rated characteristic impedance 50?
WITHDRAWN published on 1.1.1988
Selected format:Shipboard radio-frequcency cables--Radio-frequency coaxial cables with PTFE insulated copper conductor, rated charaeteristic impedance 50?
WITHDRAWN published on 1.1.1988
Selected format:Shipboard radio-frequency cables--Radio-frequency coaxial cables with polyethelene lnsulated copper conductor rated characteristic impedance 75?
WITHDRAWN published on 1.1.1988
Selected format:Shipboard radio-frequency cables--Radio-frequency coaxial cables with PTFE insulated coppor clad, steel conductorrated characteristic impedance 75?
WITHDRAWN published on 1.1.1988
Selected format:Nitrobenzene
WITHDRAWN published on 1.1.1988
Selected format:Nitrobehzene
WITHDRAWN published on 13.7.2001
Selected format:Direct blacking L-3BG
WITHDRAWN published on 1.1.1988
Selected format:Direct black L-3BG
WITHDRAWN published on 13.7.2001
Selected format:Determination of relative dye-uptake of disperse dyestuffs at high temperature dyeing
WITHDRAWN published on 1.1.1988
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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