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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
Test method for rectangular flow cure properties of thermosetting moulding compounds
WITHDRAWN published on 17.10.1985
Selected format:Phenol-formaldehyde mouldings—Detection of free ammonia
WITHDRAWN published on 17.10.1985
Selected format:Phenol-formaldehyde mouldings—Determination of free ammonia and ammonium compounds—Colorimetric comparison method
WITHDRAWN published on 17.10.1985
Selected format:Methods for sampling ion exchange resins
WITHDRAWN published on 17.10.1985
Selected format:Methods for pretreating ion exchange resins
WITHDRAWN published on 1.1.1985
Selected format:Methods for pretreating ion exchange resins
WITHDRAWN published on 25.10.1996
Selected format:Designation of polytetrafluoroethylene materials
WITHDRAWN published on 1.1.1985
Selected format:Test method for wear of plastics by rolling
WITHDRAWN published on 17.10.1985
Selected format:Equivalent terms for plastics
WITHDRAWN published on 17.10.1985
Selected format:Technical requirements for anchors
WITHDRAWN published on 1.1.1983
Selected format:Latest update: 2026-06-09 (Number of items: 2 281 484)
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