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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
Diesel engine exhaust emission--Test method--Part 1: Automobile and construction machinery applications
WITHDRAWN published on 11.6.1986
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WITHDRAWN published on 1.1.1986
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WITHDRAWN published on 1.1.1986
Selected format:Chemical reagent—Potassium chloride
WITHDRAWN published on 1.3.1993
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WITHDRAWN published on 1.1.1986
Selected format:Metallic coatings--Coatings cathodic to the substrate--Rating of electro-plated test specimens subjected to corrosion tests
WITHDRAWN published on 11.6.1986
Selected format:Metallic and oxide coatings—Measurement of coating thickness—Microscopical method
WITHDRAWN published on 11.6.1986
Selected format:Metallic and other non-organic coatings—Review of methods of measurement of thickness
WITHDRAWN published on 11.6.1986
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WITHDRAWN published on 1.1.1986
Selected format:Metals and its coatings—Atmospheric corrosion testing—General requirements for field tests
WITHDRAWN published on 25.7.1997
Selected format:Latest update: 2026-04-14 (Number of items: 2 272 146)
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