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Standards GB - Chinese national standards - Page 7601
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 9400-1988
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Dimensions of director radiator loudspeaker
WITHDRAWN published on 17.6.1988
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GB/T 9401-1988
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Methods of measurement for microphones
WITHDRAWN published on 17.6.1988
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GB/T 9402-1988
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Minimum performance requirements on high fidelity microphones
WITHDRAWN published on 17.6.1988
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GB/T 9408-1988
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Specifications for colour TV modulation equipment (1 TV+1 sound program) used in long-haul terres-trial analog radio-relay systems
WITHDRAWN published on 23.6.1988
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GB/T 9409-1988
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Specifications for colour TV demodulation equipment (1 TV+1 sound program) used in long-haul terres-trial analog radio-relay systems
WITHDRAWN published on 23.6.1988
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GB/T 9410-1988
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General specification for antennas used in the mobile services
WITHDRAWN published on 23.6.1988
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GB/T 9412-1988
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Modems for date transmission at 48 kilobits per second using 60108 kHz group band circuits
WITHDRAWN published on 23.6.1988
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GB/T 9413-1988
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Methods of measurement of modems for wide band using 60108 kHz group band circuits
WITHDRAWN published on 23.6.1988
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GB/T 9414.1-1988
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Guide on maintainability of equipment--Part 1:Introduction to maintainability
WITHDRAWN published on 26.10.1988
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GB/T 9414.2-1988
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Guide on maintainability of equipment--Part 2:Maintainability requirement in specification and contracts
WITHDRAWN published on 26.10.1988
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