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Standards GB - Chinese national standards - Page 8884
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 992-1977
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WITHDRAWN published on 1.1.1977
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GB 9920-1988
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Photographic colour filters
WITHDRAWN published on 1.1.1988
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GB 9921-1988
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General specification for photographic glass filters
WITHDRAWN published on 1.1.1988
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GB 9922-1988
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Photographic light-balancing glass filter
WITHDRAWN published on 1.1.1988
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GB 9923-1988
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Photographic neutral-density glass filter
WITHDRAWN published on 1.1.1988
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GB 9924-1988
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Series of camera lenses
WITHDRAWN published on 1.1.1988
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GB 9925-1988
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Typeface and symbol for cameras
WITHDRAWN published on 1.1.1988
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GB 9926-1988
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General specification for small power single phase A. C series motor
WITHDRAWN published on 1.1.1988
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GB 9927-1988
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Petroleum waxes and petrolatum--Test method for residue content after calcination
WITHDRAWN published on 1.1.1988
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GB 9928-1988
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Petroleum waxes--Test method for specified content of arsenic compounds
WITHDRAWN published on 1.1.1988
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