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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
The safety technique specifications of special schoolbus for schoolchildren
WITHDRAWN published on 30.9.2009
Selected format:Limit of harmful substances of exterior wall coatings
WITHDRAWN published on 30.9.2009
Selected format:Limit of harmful substances of automobile coatings
WITHDRAWN published on 30.9.2009
Selected format:Urea--Determination of total nitrogen content--Titrimetric method after distillation
WITHDRAWN published on 1.1.1991
Selected format:Determination of urea—Determination of total nitrogen content
WITHDRAWN published on 26.7.2001
Selected format:Determination of urea—Determination of biuret content—Spectrophotometric method
WITHDRAWN published on 26.7.2001
Selected format:Determination of urea—Determination of water content—Karl Fisher method
WITHDRAWN published on 26.7.2001
Selected format:Determination of urea—Determination of iron content—1,10-Phenanthroline spectrophotometric method
WITHDRAWN published on 26.7.2001
Selected format:Determination of Urea—Determination of alkalinity—Titrimetric method
WITHDRAWN published on 26.7.2001
Selected format:Determination of urea—Determination of water insoluble matter content—Weight method
WITHDRAWN published on 26.7.2001
Selected format:Latest update: 2026-04-06 (Number of items: 2 271 069)
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