The three wastes problems, comprehensive use of materials, cost reduction, high additional value should be focused for domestic enterprises.

国内现有企业应完善三废治理，提高综合利用率，用规模化生产来降低成本，提高效益，增强企业的竞争力；

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The factors affecting the reaction were discussed. Cost amounting and the three wastes of this method were compared with the reduction by Fe power.

对影响反应的因素进行了讨论，并就原料成本，三废生成量与铁粉还原进行了比较。

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The preparation method has the advantages of safe and simple operation, less discharge of the three wastes, being environment-friendly and the like.

本发明的制备方法具有操作安全、简单，三废排放量少，对环境友好等优点。

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Using all sorts of data points related to fuel consumption, routes, and times of day companies can give their drivers more efficient routes and cut down on hard braking, hard acceleration, and idling, the three biggest wastes of fuel and contributors to CO2 emissions.

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