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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
Vulcanized rubber—Determination of free sulfur content—Gas chromatography(GC)method and high performance liquid chromatography(HPLC)method
Standard published on 5.10.2025
Selected format:Rubber products—Determination of toxic and harmful substances—Part 1: Pentachlorothiophenol(PCTP)
Standard published on 31.10.2025
Selected format:Rubber products—Determination of toxic and harmful substances—Part 2:Short chain chlorinated paraffins(SCCPs)
Standard published on 5.10.2025
Selected format:
Rubber products—Determination of toxic and harmful substances—Part 3Resorcinol
Execute Date: february 2027
Standard published on 30.7.2026
Selected format:Neodymium-catalysed butadiene rubber
Standard published on 5.10.2025
Selected format:Aircraft—Tubing tolerances
Standard published on 5.10.2025
Selected format:Organophilic clay for oil based drilling fluids
Standard published on 5.10.2025
Selected format:Determination of fluorine in coal
Standard published on 27.3.2014
Selected format:Earth-moving machinery—Guideline for operational energy consumption optimization
Standard published on 5.10.2025
Selected format:Optical fibre cable for direct surface application
Standard published on 5.10.2025
Selected format:Latest update: 2026-08-26 (Number of items: 2 298 418)
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