在以煤炭为基础工业的区域或企业，延深煤基产业链是推行循环经济的重要途径。
In the area or enterprise where are based on coal, extending industrial chain based on coal is a important route for pushing circular economy.
在以煤炭为基础工业的区域或企业，延深煤基产业链是推行循环经济的重要途径。
In the area or enterprise where are based on coal, extending industrial chain based on coal is a important route for pushing circular economy.
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