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Standards GB - Chinese national standards - Page 8787
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 9183-1988
WITHDRAWN
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Front lens barrels up to 100mm--Dimensions important to the connection of auxiliaries
WITHDRAWN published on 1.1.1988
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GB 9184-1988
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Small flash connections for hand-held cameras--Dimensions
WITHDRAWN published on 1.1.1988
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GB 9185-1988
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Specification for 135-size film magazines
WITHDRAWN published on 1.1.1988
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GB/T 9185-1996
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Photography 135-Size film and magazine--Specification
WITHDRAWN published on 25.10.1996
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GB 9186-1988
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Back window location and sizes for cameras
WITHDRAWN published on 1.1.1988
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GB 9187-1988
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Automatic controls of exposure for cameras
WITHDRAWN published on 1.1.1988
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GB 9188-1988
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Photographic distance scale markings of photographic lenses
WITHDRAWN published on 1.1.1988
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GB 9189-1988
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General purpose photoelectric exposure meters
WITHDRAWN published on 1.1.1988
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GB 919-1989
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Code for highway classification
WITHDRAWN published on 1.1.1989
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GB/T 919-1994
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Code for highway classification
WITHDRAWN published on 3.3.1994
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