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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
R.F. coaxial connectors, type SSMB
WITHDRAWN published on 22.12.1995
Selected format:Water treatment chemicals--Poly aluminium chloride
WITHDRAWN published on 1.1.1995
Selected format:Water treatment chemical—Poly aluminium chloride
WITHDRAWN published on 13.6.2003
Selected format:Poly aluminium chloride for treatment of drinking water
WITHDRAWN published on 8.4.2009
Selected format:Industrial circulating cooling water—Determination of turbidity—Diffused radiation method
WITHDRAWN published on 20.12.1995
Selected format:Industrial circulating cooling water—Determination of pH—Electrometric method
WITHDRAWN published on 22.12.1995
Selected format:Industrial circulating cooling water—Determination of sulfate—Gravimetric method
WITHDRAWN published on 22.12.1995
Selected format:Industrial circulating cooling water—Detemination of dissolved matter—Gravimetric method
WITHDRAWN published on 22.12.1995
Selected format:Chemical reagent—Petroleum ether
WITHDRAWN published on 22.12.1995
Selected format:Chemical reagent—1,2-Dichloroethane
WITHDRAWN published on 20.12.1995
Selected format:Latest update: 2025-11-27 (Number of items: 2 248 457)
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