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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
Determination of the concentration of airborne particulate matters
WITHDRAWN published on 10.10.1986
Selected format:Defibrator parameters
WITHDRAWN published on 1.1.1986
Selected format:Accuracy tests of the defibrator
WITHDRAWN published on 1.1.1986
Selected format:Production and acceptance specification of the defibrator
WITHDRAWN published on 1.1.1986
Selected format:Parameters of the optical centering and loading machine
WITHDRAWN published on 1.1.1986
Selected format:-
WITHDRAWN published on 1.1.1986
Selected format:Forestry machinery—Terminology
WITHDRAWN published on 25.1.1999
Selected format:Characteristics and tests of electrodynamic and electromagnetic braking systems
WITHDRAWN published on 23.9.1986
Selected format:Technical specification for gudgeon pins of internal combustion engines
WITHDRAWN published on 1.1.1986
Selected format:Reciprocating internal combustion engines--Designation of the direction of rotation
WITHDRAWN published on 1.1.1986
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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