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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
Automatic electrical controls for household and similar use—Particular requirements for automatic electrical pressure sensing controls including mechanical requirements
WITHDRAWN published on 10.11.2010
Selected format:Automatic electrical controls for household and similar use—Particular requirements for timers and time switches
WITHDRAWN published on 17.6.1996
Selected format:Automatic electrical controls for household and similar use—Particular requirements for electrically operated water valves, including mechanical requirements
WITHDRAWN published on 17.6.1996
Selected format:Determination of arsenic, cadmiun and lead content for compound fertilizers—Preparation of test sample solution
WITHDRAWN published on 30.12.1993
Selected format:Determination of arsenic element content for compound fertilizers
WITHDRAWN published on 30.12.1993
Selected format:Determination of cadmium element content for compound fertilizers
WITHDRAWN published on 30.12.1993
Selected format:Determination of lead element content for compound fertilizers
WITHDRAWN published on 30.12.1993
Selected format:Test method for edgewise compressive properties of sandwich constructions
WITHDRAWN published on 20.9.1988
Selected format:Test method for edgewise compressive properties of sandwich constructions
WITHDRAWN published on 18.5.2005
Selected format:Determination of molybdenum content for compoumd fertilizers. Thiocyanate spectrophotometric method
WITHDRAWN published on 1.1.1993
Selected format:Latest update: 2026-04-08 (Number of items: 2 271 105)
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