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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
Green product assessment—Steel tubes
Standard published on 28.1.2026
Selected format:Metallic powder—Determination of conductivity
Standard published on 28.1.2026
Selected format:Technical specification for producing ethylene glycol from coke-oven gas
Standard published on 28.1.2026
Selected format:Chemical analysis methods of alumina fiber
Standard published on 28.1.2026
Selected format:Zinc and zinc alloy powder for additive manufacturing
Standard published on 28.1.2026
Selected format:Green product assessment—Roofing tiles
Standard published on 28.1.2026
Selected format:Green product assessment—Cement
Standard published on 28.1.2026
Selected format:Polished monocrystalline aluminum nitride wafers
Standard published on 28.1.2026
Selected format:Refractory products—Determination of reduced species in carbon containing refractories by XRD
Standard published on 28.1.2026
Selected format:Rubber flaps for tyres—Requirements and test methods
Standard published on 28.1.2026
Selected format:Latest update: 2026-11-09 (Number of items: 2 209 259)
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