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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
Standard methods for hygienic examination of crotonaldehyde in drinking water sources--Gas chromatography
Standard published on 21.9.1989
Selected format:Standard methods for hygienic examination of sulfide in drinking water sources
Standard published on 21.9.1989
Selected format:Test method of chroma for colour building materials
Standard published on 30.12.2022
Selected format:Boiler drawings
Standard published on 31.1.2008
Selected format:Insulating glass unit
Standard published on 31.12.2012
Selected format:
Insulating glass unit
Execute Date: july 2026
Standard published on 2.12.2025
Selected format:Autoclaved sand-lime solid brick and solid block
Standard published on 18.10.2019
Selected format:Thermally toughened safety glass for ships
Standard published on 19.7.2013
Selected format:Natural fibres—Terminology
Standard published on 6.2.2018
Selected format:High speed duplicate audio tape
Standard published on 24.9.2008
Selected format:Latest update: 2025-12-29 (Number of items: 2 253 390)
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