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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
Specifications for the design of outdoor water supply
WITHDRAWN published on 22.5.1986
Selected format:Cup head nib bolts
WITHDRAWN published on 24.6.1988
Selected format:-
WITHDRAWN published on 1.1.1981
Selected format:Technical code for reinforced concrete lift-slab structure
WITHDRAWN published on 18.5.1990
Selected format:-
WITHDRAWN published on 1.1.1977
Selected format:Information technology—Universal multiple octet coded character set(UCS)
WITHDRAWN published on 10.1.2011
Selected format:Information technology—Universal Multiple-Octet Coded Character Set(UCS)—Part 1:Architecture and Basic Multilingual Plane
WITHDRAWN published on 24.12.1993
Selected format:Test method for leveller
WITHDRAWN published on 1.1.1991
Selected format:Built-in thermal protection for rotating electrical machines Rules for protection of rotating electrical machines
WITHDRAWN published on 5.5.1991
Selected format:Rotating electrical machines—Thermal protection
WITHDRAWN published on 23.4.2008
Selected format:Latest update: 2026-04-10 (Number of items: 2 271 455)
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