China National Standards

China concentrates―Precision GB Standards List

  •  China "concentrates―Precision" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 30083-2013 Copper,lead and zinc ores and concentrates―Precision and bias of mass measurement techniques
    铜、铅和锌矿及精矿 计量方法的精密度和偏差    		 China National Standards
    concentrates―Precision
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