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Standards GB - Chinese national standards - Page 8820
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 9405.1-1988
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General specification for electrodynamic cone loudspeaker of direct radiator type
WITHDRAWN published on 1.1.1988
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GB 9405.2-1988
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test methods of third order digital multiplex equipment--Operating at 34368kbit/s and using positive justification
WITHDRAWN published on 1.1.1988
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GB 9406-1988
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WITHDRAWN published on 1.1.1988
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GB 9407-1988
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WITHDRAWN published on 1.1.1988
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GB/T 9408-1988
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Specifications for colour TV modulation equipment(1TV+1 sound program)--Used in long-haul terestrial 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WITHDRAWN published on 23.6.1988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(1TV+1 sound program)--Used in long-haul terrestrial 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WITHDRAWN published on 23.6.1988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WITHDRAWN published on 23.6.1988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 data transmission at 48 kilobits per second using 60~108 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 midems for wide band using 60~108 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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