China National Standards

China 2：chlorine GB Standards List

  •  China "2：chlorine" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 20475.2-2006 Classification for content of harmful elements in coal - Part 2：chlorine
    煤中有害元素含量分级 第2部分：氯    		 China National Standards
    2：chlorine
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