它重点是重型工业机械、“脏乱”的工厂或污染企业，如混凝土或钢铁或采矿。
It focuses on heavy industrial plants, factories in "dirty" or polluting industries like concrete or steel, or mining.
它重点是重型工业机械、“脏乱”的工厂或污染企业，如混凝土或钢铁或采矿。
It focuses on heavy industrial plants, factories in "dirty" or polluting industries like concrete or steel, or mining.
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