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Standards GB - Chinese national standards - Page 7217
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 25281-2010
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The vest with safety sign for the working people on roads
WITHDRAWN published on 10.11.2010
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GB/T 25283-2010
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Specification for comprehensive exploration and evaluation of mineral resources
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GB 25285.1-2010
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Explosive atmospheres—Explosion prevention and protection—Part 1:Basic concepts and methodology
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GB 25285.2-2010
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Explosive atmospheres—Explosion prevention and protection—Part 2:Basic concepts and methodology for mining
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GB 25286.1-2010
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Non-electrical equipment for explosive atmospheres—Part 1:Basic method and requirements
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GB 25286.5-2010
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Non-electrical equipment for explosive atmospheres—Part 5:Protection by constructional safety "c"
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GB 25286.6-2010
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Non-electrical equipment for explosive atmospheres—Part 6:Protection by control of ignition source "b"
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GB 25286.8-2010
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Non-electrical equipment for explosive atmospheres—Part 8:Protection by liquid immersion "k"
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GB 25287-2010
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Perimeter protection high-voltage device
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GB/T 25289-2010
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Specification and technical requirements for 20 kV oil-immersed distribution transformers
WITHDRAWN published on 10.11.2010
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