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		2000—2015年中国铜废碎料贸易及效益风险分析
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			Benefits and risks of China’s copper waste and scrap trade during 2000-2015
			 
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		 图7. 2000—2015年中国节约的矿山投资成本及进口铜废碎料、精炼铜和铜精矿的单价  | 
	
Figure 7. China’s saved mining investment cost and unit price of imported copper waste and scrap, refined copper, and copper concentrate, 2000-2015  | 
	
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