China National Standards

China Chinese classification coals GB Standards List

  •  China "Chinese classification coals" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 5751-2009 Chinese classification of coals
    中国煤炭分类    		 China National Standards
    Chinese classification coals
    English PDF
    GB/T 17607-1998 Chinese classification of seam coals
    中国煤层煤分类    		 China National Standards
    Chinese classification coals
    English PDF

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