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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
Steel fire windows
WITHDRAWN published on 28.5.1997
Selected format:Rubber—Determination of rebound resilience of vulcanizates
WITHDRAWN published on 25.4.1991
Selected format:Test methods for fire resistance of cotainers
WITHDRAWN published on 28.5.1997
Selected format:Running result and the monitoring and testing of low-pressure boilers water-treatment equipment
WITHDRAWN published on 3.6.1997
Selected format:Running result and the monitoring and testing for industrial boilers water-treatment equipment
WITHDRAWN published on 25.5.2005
Selected format:Technical specification for NICAM-728 digital audio signal transmission with satellite TV channel subcarrrier
WITHDRAWN published on 28.5.1997
Selected format: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WITHDRAWN published on 28.5.1997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WITHDRAWN published on 28.5.1997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WITHDRAWN published on 28.5.1997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WITHDRAWN published on 19.9.2008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:Latest update: 2025-11-12 (Number of items: 2 243 625)
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