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Standards GB - Chinese national standards - Page 5530
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 11271-1989
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Diamond frame saw blades
WITHDRAWN published on 1.1.1989
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GB 11272-1989
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Diamond or cubic boron nitride sticks
WITHDRAWN published on 1.1.1989
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GB 11273-1989
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Synthetic diamond or cubic boron nitride lapping paste
WITHDRAWN published on 1.1.1989
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GB 11274-1989
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Pulp stone
WITHDRAWN published on 1.1.1989
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GB 11275-1989
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Surface active agents--Determination of water content--Azeotropic distillation method
WITHDRAWN published on 1.1.1989
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GB/T 11275-1995
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Surface active agents and soaps—Determination of water content—Azeotropic distillation method
WITHDRAWN published on 20.12.1995
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GB/T 11276-1989
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Cationic surface active agents (hydrochlorides and hydrobromides)—Determination of critical micellization concentration—Method by measurement of counter ion activity
WITHDRAWN published on 31.3.1989
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GB/T 11277-1989
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Surface active agents—Non-ionic surface active agents—Determination of cloud point index (water number)—Volumetric method
WITHDRAWN published on 31.3.1989
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GB/T 11278-1989
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Anionic and non-ionic active agents—Determination of the critical micellization concentration—Method by measuring surface tension with ring
WITHDRAWN published on 31.3.1989
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GB/T 11279-1989
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Guide to the application to environmental tests to electronic components
WITHDRAWN published on 31.3.1989
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