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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
Procedures and rules for the qualification approval of new products for semiconductor integrated circuits
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The bis-acetaldehyde-oxalyl dihydrazone photometric method for the determination of copper content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The neocuproine-methyl orange extraction photometric method for the determination of silver content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The potassium iodide-brucine photometric method for the determination of bismuth content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The silver diethyldithiocarbamate photometric method for the determination of arsenic content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The malachite green photometric method for the determination of antimony content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The catechol violet-cetyl trimethyl ammonium bromide photometric method for the determination of tin content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The flame atomic absorption spectrophotometric method for the determination of zinc content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The 1, 10-phenanthroline photometric method for the determination of iron content
WITHDRAWN published on 1.1.1984
Selected format:Methods for chemical analysis of lead ingots--The crystal violet photometric method for the determination of thallium content
WITHDRAWN published on 1.1.1984
Selected format:Latest update: 2025-09-17 (Number of items: 2 234 360)
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