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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
General principles for interworking between public networks,and between public networks and other networks for the provision of data transmission services
WITHDRAWN published on 16.12.1997
Selected format:Plates for offset printing—Dimensions
WITHDRAWN published on 16.12.1997
Selected format:Graphic technology—Prepress digital data exchange—Monochrome image data on magnetic tape
WITHDRAWN published on 16.12.1997
Selected format:Graphic technology—Prepress digital data exchange—Online transfer from electronic prepress systems to colour hardcopy devices
WITHDRAWN published on 16.12.1997
Selected format:Graphic technology—Prepress digital data exchange—Colour line art data on magnetic tape
WITHDRAWN published on 16.12.1997
Selected format:Graphic technology—Prepress digital data exchange—Colour pictures data on magnetic tape
WITHDRAWN published on 16.12.1997
Selected format:Specifications for aerial photogrammetric digital mapping of 1:25000,1:50000 and 1:100000 topographic maps
WITHDRAWN published on 16.12.1997
Selected format:Specifications for aerial photogrammetric analytical mapping of 125 000 150 000 1100 000 topographic maps
WITHDRAWN published on 29.6.2012
Selected format:Record format for photogrammetric digital mapping
WITHDRAWN published on 16.12.1997
Selected format:Record format for photogrammetric digital mapping
WITHDRAWN published on 20.6.2008
Selected format:Latest update: 2026-04-21 (Number of items: 2 274 412)
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