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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
Specification of reliability for hydrologic instruments
WITHDRAWN published on 14.8.2000
Selected format:Oil spill dispersant—Technical regulations
WITHDRAWN published on 7.9.2000
Selected format:Oil spill dispersant--Application criteria
WITHDRAWN published on 7.9.2000
Selected format:Requirements for industry of motorcycle maintenance and repair being managed
WITHDRAWN published on 7.9.2000
Selected format:Determination of moisture content in tin concentrates--Gravimetric method
WITHDRAWN published on 29.12.1979
Selected format:Methods for chemical analysis of tin concentrates—Determination of water content—The weighing method
WITHDRAWN published on 5.2.2004
Selected format:Methods for chemical analysis of tin concentrates—Determination of sulphur content—The high frequency infrared absorption method and the combustion potassium iodate titrimetric method
WITHDRAWN published on 5.2.2004
Selected format:Methods for chemical analysis of tin concentrates—Determination of aluminum oxide content—The chromazuzol S spectrophotometric method
WITHDRAWN published on 5.2.2004
Selected format:Methods for chemical analysis of tin concentrates—Determination of silicon dioxide content—The silicomolybdenum blue spectrophotometric method
WITHDRAWN published on 5.2.2004
Selected format:Methods for chemical analysis of tin concentrates—Determination of magnesium oxide and calcium oxide contents—Flame atomic absorption spectrometric method
WITHDRAWN published on 5.2.2004
Selected format:Latest update: 2026-08-21 (Number of items: 2 298 377)
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