但这些单位几乎没有投入，产品也没有最终买家，而且许多工厂的机器、铜线和任何有价值的东西早就被管理者们用各种方法变卖了。

But those units have few inputs or end-buyers, and many factories have anyway long been stripped by managers of machinery, copper wire or anything of value.

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最终得到的石墨烯产品很多时候比农业残留物更有价值。

The resulting product – graphene, is many times more valuable than the agricultural residue.

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