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Standards GB - Chinese national standards - Page 6903
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 20168-2006
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Rapidly-quenched neodymium iron boron permanent magnetic powder
WITHDRAWN published on 13.4.2006
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GB/T 20169-2006
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Mixed rare earth oxide of ion-absorpted type rare earth ore
WITHDRAWN published on 13.4.2006
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GB/T 20173-2006
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Petroleum and natural gas industries—Pipeline transportation systems—Pipeline valves
WITHDRAWN published on 29.3.2006
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GB/T 20174-2006
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Petroleum and natural gas industries—Drilling and production equipment—Drill-through equipment
WITHDRAWN published on 29.3.2006
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GB/T 20175-2006
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Surface chemical analysis-Sputter depth profiling-Optimization using layered systems as reference materials
WITHDRAWN published on 27.3.2006
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GB/T 20176-2006
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Surface chemical analysis-Secondary-ion mass spectrometry-Determination of boron atomic concentration in silicon using uniformly doped materials
WITHDRAWN published on 27.3.2006
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GB/Z 20177.1-2006
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Control network LONWORKS technology specification Part1:Protocol specification
WITHDRAWN published on 8.5.2006
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GB/Z 20177.2-2006
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Control network LONWORKS technology specification Part 2:Power line channel specification
WITHDRAWN published on 8.5.2006
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GB/Z 20177.3-2006
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Control network LONWORKS technology specification Part 3: Free-topology twisted-pair channel specification
WITHDRAWN published on 8.5.2006
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GB/Z 20177.4-2006
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Control network LONWORKS technology specification Part 4: Tunneling component network protocols over internet protocol channels
WITHDRAWN published on 8.5.2006
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