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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 for printing of maps
WITHDRAWN published on 5.7.1993
Selected format:Compilation specifications and cartographic symbols for 1:1000000 topographic maps
WITHDRAWN published on 5.7.1993
Selected format:Pneumatic fluid power—Determination of flowrate characteristics of pneumatic components
WITHDRAWN published on 17.6.1993
Selected format:Pneumatic fluid power—Tube fittings—Test methods
WITHDRAWN published on 17.6.1993
Selected format:Pneumatic fluid power—Quick action couplings—Test methods
WITHDRAWN published on 17.6.1993
Selected format:Specification for single and double sided flexible printed boards with through connections
WITHDRAWN published on 12.7.1993
Selected format:Specification for single and double sided flexible printed boards without through connections
WITHDRAWN published on 12.7.1993
Selected format:Test method for dielectric strength of insulating adhesive tape at power frequency
WITHDRAWN published on 15.6.1993
Selected format:Plastics—Method of exposure to indirect weathering using glass-filtered daylight
WITHDRAWN published on 9.6.1993
Selected format:Test method for flatwise tension strength of nonmetal sandwich constructions
WITHDRAWN published on 4.11.1978
Selected format:Latest update: 2026-06-11 (Number of items: 2 281 927)
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