申武投资初期安装了一个热交换器，将进入炉内的空气预热，降低了客户的燃料成本。
Shenwu puts up the initial investment to install a heat exchanger that preheats the air going into the furnace, slashing the client's fuel costs.
申武投资初期安装了一个热交换器，将进入炉内的空气预热，降低了客户的燃料成本。
Shenwu puts up the initial investment to install a heat exchanger that preheats the air going into the furnace, slashing the client's fuel costs.
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