The coal mining and processing industry generated the
most ISW among Chinese industrial sectors, producing
16.0% of the total; nest came the ferrous metal mining and
processing Industry with 15.7% of total ISW, the production
and supply of power, steam and hot water with 14.0%, the
ferrous metal smelting industry with 14.0%, the nonferrous
metal mining and processing industry with 11.0%, and
chemical materials and chemical products with 5.50%. The
combined of ISW from these six industrial sectors makes up
76.2% of total ISW.2,6,7