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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
Chemical reagent--Pyridine
Standard published on 20.10.1998
Selected format:Zinc powder
Standard published on 31.12.2012
Selected format:Aluminium and aluminium alloy profiled sheet
Standard published on 14.5.2018
Selected format:Wrought aluminium and aluminium alloys extruded profiles for general engineering
Standard published on 7.9.2023
Selected format:Aluminium and aluminium alloys cold drawn (rolled) tubes
Standard published on 9.3.2022
Selected format:Niobium bars
Standard published on 23.11.2007
Selected format:Slotted raised countersunk head screws
Standard published on 24.2.2016
Selected format:Chemical reagent - Benzene
Standard published on 15.5.2008
Selected format:Chemical analysis of alumina-silica refractories
Standard published on 29.8.2016
Selected format:Chemical analysis of alumino—silicate refractories
Standard published on 29.8.2025
Selected format:Latest update: 2026-11-10 (Number of items: 2 209 227)
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