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GB - Chinese national standards - Page 7656

Standards GB - Chinese national standards - Page 7656

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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Preview GB 4728.10-1985 1.1.1985

GB 4728.10-1985 WITHDRAWN

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Preview GB/T 4728.10-1999 23.3.1999

GB/T 4728.10-1999 WITHDRAWN

Graphical symbols for diagrams—Part 10:Telecommunications:Transmission

WITHDRAWN published on 23.3.1999

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Preview GB/T 4728.10-2008 28.5.2008

GB/T 4728.10-2008 WITHDRAWN

Graphical symbols for diagrams—Part 10:Telecommunications:Transmission

WITHDRAWN published on 28.5.2008

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Preview GB/T 4728.11-1985 1.1.1985

GB/T 4728.11-1985 WITHDRAWN

Graphical symbols for electrical diagrams--Electric power, lighting and telecommunications layout

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Preview GB/T 4728.11-2000 28.12.2000

GB/T 4728.11-2000 WITHDRAWN

Graphical symbols for diagrams—Part 11:Architectural and topographical installation plans and diagrams

WITHDRAWN published on 28.12.2000

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Preview GB/T 4728.11-2008 28.5.2008

GB/T 4728.11-2008 WITHDRAWN

Graphical symbols for diagrams—Part 11:Architectural and topographical installation plans and diagrams

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Preview GB 4728.12-1985 1.1.1985

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Graphical symbols for electrical diagrams--Binary logic elements

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Preview GB/T 4728.12-1996 17.12.1996

GB/T 4728.12-1996 WITHDRAWN

Graphical symbols for electrical diagrams—Part 12:Binary logic elements

WITHDRAWN published on 17.12.1996

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Preview GB/T 4728.12-2008 28.5.2008

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Graphical symbols for diagrams—Part 12:Binary logic elements

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Preview GB 4728.13-1985 1.1.1985

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Graphical symbols for electrical diagrams--Analogue elements

WITHDRAWN published on 1.1.1985

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