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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
Seeds of economic crops—Oil crops
WITHDRAWN published on 28.12.1996
Selected format:Seed of economic crops - Part 2: Oil species
WITHDRAWN published on 28.6.2008
Selected format:Cotton seed
WITHDRAWN published on 1.1.1984
Selected format:Seed of bast fibre crops
WITHDRAWN published on 1.1.1984
Selected format:Document facsimile transmission (group 1) in telephone network
WITHDRAWN published on 1.1.1984
Selected format:Document facsimile transmission (group 2) in telephone network
WITHDRAWN published on 1.1.1984
Selected format:Methods for heat-measuring of mechanical cement shaft kilns
WITHDRAWN published on 1.1.1984
Selected format:Calculation of heat balance for mechanical cement shaft kilns
WITHDRAWN published on 1.1.1984
Selected format:Methods of sampling and sample preparation of tungsten concentrates in bags
WITHDRAWN published on 29.5.1984
Selected format:Fire clay refractory bricks
WITHDRAWN published on 1.1.1984
Selected format:Latest update: 2025-10-16 (Number of items: 2 238 946)
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