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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
Information technology - Telecommunication and information exchange between systems - DTE/DCE interface back-up control operation using GB/T 3454 interchange circuits
Standard published on 28.7.2008
Selected format:Information processing system--Datacommunication--Multilink procedures
Standard published on 16.7.1994
Selected format:Informationtechnology--Data communication--25-Pole DTE/DCE interface connector and contact number assignments
Standard published on 16.7.1994
Selected format:Information technology - Open system interconnection - Network service definition
Standard published on 16.7.2008
Selected format:Information technology - Telecommunications and information exchange between systems - Twisted pair multipoint interconnections
Standard published on 1.9.2008
Selected format:Information technology - Open systems interconnection - Session service definition
Standard published on 19.8.2008
Selected format:Manganese ores - Determination of calcium and magnesium contents -Flame atomic absorption spectrometric method
Standard published on 12.9.2006
Selected format:Information processing--Data interchange on 90mm (35in) flexible disk cartridges using modified frequency modulation recording at 15916 ftprad on 80 tracks on each side--Part1:Dimensional physical and magnetic characteristics
Standard published on 16.7.1994
Selected format:Information processing--Data interchange on 90mm flexible disk cartridges using modified frequency modulation recording at15916 ftprad on 80 tracks on each side--Part 2:Track format
Standard published on 13.12.1995
Selected format:Information processing--Data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftpradon 80 tracks on each side--Part 1:Dimensional physical and magnetic characteristics
Standard published on 16.7.1994
Selected format:Latest update: 2026-04-24 (Number of items: 2 274 650)
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