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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
Determination of free water for compound fertilizers--Vacuum oven method
WITHDRAWN published on 4.1.1988
Selected format:Determination of free water for compound fertilizers—Vacuum oven method
WITHDRAWN published on 24.9.2002
Selected format:Determination of free water for compound fertilizers--Karl fischer method
WITHDRAWN published on 4.1.1988
Selected format:Determination of free water for compound fertilizers-Karl fischer method
WITHDRAWN published on 24.9.2002
Selected format:Intermediate frequency of FM receivers
WITHDRAWN published on 4.1.1988
Selected format:Terminology for mechanical structures of electrotechnical and electronic equipment
WITHDRAWN published on 3.1.2000
Selected format:The technical requirements of operational frequency distribution and anti-interference of sound for fish finders
WITHDRAWN published on 5.1.1988
Selected format:Technical requirements of operational frequency distribution and anti-interference of sound for fishfinders
WITHDRAWN published on 27.12.2007
Selected format:Tractor-dozers—Terminology
WITHDRAWN published on 29.5.2001
Selected format:Earth-moving machinery—Symbols for operator controls and other display—Part 1:Common symbols
WITHDRAWN published on 17.6.1998
Selected format:Latest update: 2024-12-22 (Number of items: 2 217 000)
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