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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
Test methods for water vapour transmission of building materials
WITHDRAWN published on 12.12.1997
Selected format:Measurement of audio-frequency noise voltage level in sound broadcasting
WITHDRAWN published on 12.12.1997
Selected format:A conventional test signal simulating sound—Programme signals for measuring interference in other channels
WITHDRAWN published on 12.12.1997
Selected format:Determination of the screened material from dyestuff
WITHDRAWN published on 15.9.1979
Selected format:Radiological protection monitoring procedure Part 1:Industrial X-ray detection
WITHDRAWN published on 15.12.1997
Selected format:Information processing systems—Computer graphics—Programmer""s Hierarchical Interactive Graphics system (PHIGS)—Part 1:Functional description
WITHDRAWN published on 15.12.1997
Selected format:Information processing system—Computer graphics—Programmer""s Hierarchical Interactive graphics System (PHIGS)—Part 2:Archive file format
WITHDRAWN published on 15.12.1997
Selected format:Information processing systems—Computer graphics-Programmer""s Hierarchical Interactive Graphics System—(PHIGS)Part 3:Clear-text encoding of archive file
WITHDRAWN published on 15.12.1997
Selected format:Freight Costs Code(FCC)—Harmonization of the description of freight costs and other charges
WITHDRAWN published on 16.12.1997
Selected format: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WITHDRAWN published on 16.12.1997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:Latest update: 2025-11-14 (Number of items: 2 243 651)
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