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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 moisture holding capacity of ion exchange resins
Standard published on 30.6.2008
Selected format:Determination for particle size,effective size and uniformity coefficient of ion exchange resins
Standard published on 6.8.2023
Selected format:Plastics—Ion exchange resin—Determination of water content of anion exchange resins in hydroxide form by centrifugation
Standard published on 5.10.2025
Selected format:Plastics—Ion exchange resin—Determination of exchange capacity of anion exchange resins in hydroxide form
Standard published on 5.10.2025
Selected format:Suspension polyvinyl chloride resins of general purpose
Standard published on 28.12.2018
Selected format:Methods for chemical analysis of limestone, quicklime and hydrated lime for building materials industry
Standard published on 25.4.2024
Selected format:Brake linings for automobiles
Standard published on 19.11.2018
Selected format:Clutch facings for automobiles
Standard published on 28.12.2023
Selected format:Test method of Rockwell hardness for friction materials
Standard published on 28.12.2023
Selected format:Traffic signs and markings—Part 1: General
Standard published on 25.4.2025
Selected format:Latest update: 2026-06-25 (Number of items: 2 284 379)
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