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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
Wheelchairs—Part 4:Energy consumption of electric wheelchairs and scooters for determination of theoretical distance range
WITHDRAWN published on 30.9.2009
Selected format:Wheelchairs—Part 5:Determination of overall dimension,mass and turning space
WITHDRAWN published on 31.12.2008
Selected format:Wheelchairs—Part 6:Determination of maximum speed,acceleration and deceleration of electric wheelchairs
WITHDRAWN published on 30.9.2009
Selected format:Wheelchairs—Part 8:Requirements and test methods for static,impact and fatigue strengths
WITHDRAWN published on 31.12.2008
Selected format:Wheelchairs—Part 9:Climatic tests for electric wheelchairs
WITHDRAWN published on 19.9.2008
Selected format:-
WITHDRAWN published on 1.1.1979
Selected format:Information technology—Chinese ideograms coded character set for information interchange—Extension for the basic set
WITHDRAWN published on 17.3.2000
Selected format:Information technology—Chinese coded character set
WITHDRAWN published on 8.11.2005
Selected format:Information technology—Generic specification for Chinese character input with digital keyboard
WITHDRAWN published on 17.3.2000
Selected format:Seamless copper tubes for water and gas
WITHDRAWN published on 3.4.2000
Selected format:Latest update: 2025-09-11 (Number of items: 2 232 047)
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