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Standards GB - Chinese national standards - Page 5532
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 11285-1989
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Installation of a collective gain reflective projection screen
WITHDRAWN published on 1.1.1989
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GB 11286-1989
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Measurement of sound attenuation through a perforated reflective projection screen
WITHDRAWN published on 1.1.1989
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GB 11288-1989
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Under-excitation impedance protection equipment for generator
WITHDRAWN published on 1.1.1989
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GB 11289-1989
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Protection equipment of generator stator earthing
WITHDRAWN published on 1.1.1989
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GB 1129-1985
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Inserted blade face milling cutters
WITHDRAWN published on 1.1.1985
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GB 11290-1989
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Specification for fault oscillograph panel
WITHDRAWN published on 1.1.1989
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GB 11291-1997
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Industrial robots—Safety specification
WITHDRAWN published on 2.9.1997
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GB/T 11292-1989
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Numerical control of machines--NC processor output--Minor elements of 2000-type records (post-processor commands)
WITHDRAWN published on 31.3.1989
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GB 11294-1989
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Commonly used terms for semiconductor photoelectric materials and pyroelectric materials in infrared detecting materials
WITHDRAWN published on 1.1.1989
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GB/T 11297.1-1989
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Test method for wavefront distortion of laser rods
WITHDRAWN published on 31.3.1989
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