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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 calorific value of coal
WITHDRAWN published on 19.12.1996
Selected format:Determination of calorific value of coal
WITHDRAWN published on 1.7.2003
Selected format:Determination of copper content in cadmium--Neoluproinelead-base photometric method
WITHDRAWN published on 19.12.1980
Selected format:Specification for water measuring of irrigation canal system
WITHDRAWN published on 14.12.2007
Selected format:Cereals and cereal products—Determination of moisture content—Routine reference method
WITHDRAWN published on 23.11.2007
Selected format:Roller gin
WITHDRAWN published on 23.11.2007
Selected format:Determination of zinc content in cadnium--Atomic absorption spectrophotometric method
WITHDRAWN published on 19.12.1980
Selected format:Analysis of -agonists in foods of animal origin by high performance liquid chromatography tandem mass spectrometry
WITHDRAWN published on 29.10.2007
Selected format:Determination of iron content in cadmium--1,10-Phenanthroline photometric method
WITHDRAWN published on 19.12.1980
Selected format:Evaporator of water surface
WITHDRAWN published on 24.12.2007
Selected format:Latest update: 2026-01-11 (Number of items: 2 254 176)
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