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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
Method for the determination of acidity or alkalinity of solid coumarone-indene resin
WITHDRAWN published on 1.1.1984
Selected format:1, 8-Naphthalic anhydride
WITHDRAWN published on 1.1.1984
Selected format:Rules of inspection and acceptance for printed and dyed fabrics
WITHDRAWN published on 20.6.1978
Selected format:Method for the determination of 1, 8-naphthalic anhydride content
WITHDRAWN published on 1.1.1984
Selected format:Method for the determination of the melting point of 1, 8-naphthalic anhydride
WITHDRAWN published on 1.1.1984
Selected format:Refined pyridine--Determination of pyridine content--Gas chromatographic method
WITHDRAWN published on 1.1.1984
Selected format:Pin coupling with elastic sleeve
WITHDRAWN published on 11.4.1984
Selected format:Pin coupling with elastic sleeve
WITHDRAWN published on 13.9.2002
Selected format:Methods for chemical analysis of tungsten--The square wave polarographic method for the successive determination of lead and cadmium contents
WITHDRAWN published on 12.4.1984
Selected format:Methods for chemical analysis of tungsten--The neocuproine photometric method for the determination of copper content
WITHDRAWN published on 12.4.1984
Selected format:Latest update: 2025-10-15 (Number of items: 2 238 420)
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