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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
Valves for liquefied petroleum gas cylinders
WITHDRAWN published on 19.7.2006
Selected format:Valves for liquefied petroleum gas cylinders
WITHDRAWN published on 1.11.2017
Selected format:Layout of the Chinese ideographs on keyboard
WITHDRAWN published on 24.3.1987
Selected format:Micrographics—Graphical symbols
WITHDRAWN published on 23.10.1996
Selected format:Micrographics--Microfilming for thread-bound Chinese books on 35mm roll film
WITHDRAWN published on 25.3.1987
Selected format:Micrographics—Determination of residual thiosulphate in processed microfilm—Methylene blue method
WITHDRAWN published on 25.3.1987
Selected format:Potassium chlorate for industrial use
WITHDRAWN published on 22.12.1994
Selected format:Potassium chlorate for industrial use
WITHDRAWN published on 14.9.2006
Selected format:Multiple controllers in a CAMAC crate
WITHDRAWN published on 26.3.1987
Selected format:CAMAC-Serial highway interface systems
WITHDRAWN published on 26.3.1987
Selected format:Latest update: 2025-07-25 (Number of items: 2 209 786)
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