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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 polycrystalline silicon
WITHDRAWN published on 30.10.2009
Selected format:Electronic-grade polycrystalline silicon
WITHDRAWN published on 31.12.2014
Selected format:Monocrystalline silicon polished slices
WITHDRAWN published on 1.1.1991
Selected format:Monocrystalline silicon polished wafers
WITHDRAWN published on 4.11.1996
Selected format:Monocrystalline silicon polished wafers
WITHDRAWN published on 16.6.2003
Selected format:Monocrystalline silicon as cut slices and lapped slices
WITHDRAWN published on 1.1.1991
Selected format:Monocrystalline silicon as cut slices and lapped slices
WITHDRAWN published on 4.11.1996
Selected format:Monocrystalline silicon as cut slices and lapped slices
WITHDRAWN published on 19.9.2005
Selected format:The method for electrical conductivity measurement of aluminium alloys by use of eddy current
WITHDRAWN published on 4.6.1991
Selected format:The method for determining aluminum alloys conductivity using eddy current
WITHDRAWN published on 17.6.2008
Selected format:Latest update: 2026-01-18 (Number of items: 2 257 146)
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