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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
Methods of measurement for synchronous digital hierarchy(SDH)optical fiber cable line systems
WITHDRAWN published on 28.5.1997
Selected format:Technical requirements for group 3 facsimile—apparatus connected to telecommunication network on transmission rate 64kbit/s
WITHDRAWN published on 28.5.1997
Selected format:Thermoluminescence dosimeter system for radiotherapy level monitoring
WITHDRAWN published on 28.5.1997
Selected format:Thermoluminescence dosimeter sysytem for radiotherapy level monitoring
WITHDRAWN published on 19.9.2008
Selected format:Specifications for short to medium ranges electro-optical distance measurements
WITHDRAWN published on 28.5.1997
Selected format:Planetabling specifications for 1:5001100012000 topographic maps
WITHDRAWN published on 28.5.1997
Selected format:Specifications for planetabling of 1:500 1:1 000 1:2 000 topographic maps
WITHDRAWN published on 29.6.2012
Selected format:Method of test for temperature limit of brittleness for vulcanized rubbers
WITHDRAWN published on 1.1.1982
Selected format:Rubber, vulcanized—Determination of low-temperature brittleness(single test piece method)
WITHDRAWN published on 24.9.1994
Selected format:Cartography Terms
WITHDRAWN published on 28.5.1997
Selected format:Latest update: 2026-02-01 (Number of items: 2 258 192)
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