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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
Specification for ceramic partstype B
Standard published on 28.6.1988
Selected format:Specification for ceramic partstype C
Standard published on 28.6.1988
Selected format:Specification for ceramic partstype D
Standard published on 28.6.1988
Selected format:Specification for ceramic partstype E
Standard published on 28.6.1988
Selected format:Specification for ceramic partstype F
Standard published on 28.6.1988
Selected format:Designations for piezoelectric crystals
Standard published on 5.11.2012
Selected format:Test method for complex permittivity of solid dielectric materials at millimeter wave frequencies using “Quasi-optic Cavity” technique
Standard published on 28.6.1988
Selected format:Crystalline silicon terrestrial photovoltaic (PV) modules-design qualification and type approval
Standard published on 17.11.1998
Selected format:
Terrestrial photovoltaic (PV) modules—Design qualification and type approval—Part 1: Test requirements
Execute Date: may 2026
Standard published on 5.10.2025
Selected format:
Terrestrial photovoltaic (PV) modules—Design qualification and type approval—Part 1-1: Special requirements for testing of crystalline silicon photovoltaic (PV) modules
Execute Date: july 2026
Standard published on 31.12.2025
Selected format:Latest update: 2026-04-20 (Number of items: 2 274 419)
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