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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
Germanium single crystals--Measurement of minority carrier lifetime--DC photo conductive decay method
WITHDRAWN published on 1.1.1985
Selected format:Test method for compressive properties of thin glass fiber reinforced plastics laminates
WITHDRAWN published on 1.1.1985
Selected format:Test method for compressive properties of fiber reinforced plastic thin laminates
WITHDRAWN published on 20.12.1995
Selected format:Test method for gel time of prepreg
WITHDRAWN published on 1.1.1985
Selected format:Conveyor belts with fabric carcass--Specification for appearance quality
WITHDRAWN published on 1.1.1989
Selected format:Test method for resin flow of prepreg
WITHDRAWN published on 1.1.1985
Selected format:Additional control functions for character imaging devices
WITHDRAWN published on 1.1.1985
Selected format:Measuring methods for agricultural machinery testing conditions—general rules
WITHDRAWN published on 25.7.1985
Selected format:Test methods for guards of power take-off drive shafts for agriculture machinery
WITHDRAWN published on 1.1.1985
Selected format:Tractors and machinery for agriculture and forestry—Guards for power take-off (PTO) drive-shafts—Part 1:Strength test
WITHDRAWN published on 16.3.2000
Selected format:Latest update: 2026-06-11 (Number of items: 2 281 927)
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