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Standards GB - Chinese national standards - Page 8506
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
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GB/T 5252-2006
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Germanium monocrystal—Inspection of dislocation etch pit density
WITHDRAWN published on 18.7.2006
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GB 5253-1985
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WITHDRAWN published on 1.1.1985
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GB 5254-1985
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WITHDRAWN published on 1.1.1985
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GB 5255-1985
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WITHDRAWN published on 1.1.1985
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GB 5256-1985
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Germanium monocrystal--Examination of conductivity type
WITHDRAWN published on 1.1.1985
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GB 5257-1985
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Germanium single crystals--Measurement of minority carrier lifetime--DC photo conductive decay method
WITHDRAWN published on 1.1.1985
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GB 5258-1985
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Test method for compressive properties of thin glass fiber reinforced plastics laminates
WITHDRAWN published on 1.1.1985
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GB/T 5258-1995
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Test method for compressive properties of fiber reinforced plastic thin laminates
WITHDRAWN published on 20.12.1995
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GB 5259-1985
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Test method for gel time of prepreg
WITHDRAWN published on 1.1.1985
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GB 526-1989
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Conveyor belts with fabric carcass--Specification for appearance quality
WITHDRAWN published on 1.1.1989
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