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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
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WITHDRAWN published on 1.1.1979
Selected format:Specification of the four channels digital sound sub-carrier system
WITHDRAWN published on 26.1.1994
Selected format:The demand for the picture quality of PAL-D system in satellite television broadcasting services
WITHDRAWN published on 26.1.1994
Selected format:Grades for microbiological and parasitological monitoring of laboratory animals (rodent and rabbit)
WITHDRAWN published on 1.1.1994
Selected format:Laboratory animal—Standards and monitoring for parasitology
WITHDRAWN published on 29.8.2001
Selected format:Laboratory animal—Microbiological standards and monitoring
WITHDRAWN published on 29.8.2001
Selected format:Laboratory animal—Microbiological standards and monitoring
WITHDRAWN published on 16.6.2011
Selected format:Genetic quality control of mammalian laboratory animals
WITHDRAWN published on 1.1.1994
Selected format:Laboratory animal—Genetic quality control of mammalian laboratory animals
WITHDRAWN published on 29.8.2001
Selected format:Laboratory animal—Genetic quality control of mammalian laboratory animals
WITHDRAWN published on 23.12.2010
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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