Very simple, to cut the costs and increase the efficiency.
很简单，为了节约成本，提高效率。
They save energy, increase efficiency, raise productivity and so help to keep costs under control.
不仅可以节约能源，提高效率，提高生产力，而且有助于控制成本。
They save energy, increase efficiency, raise productivity and so help to keep costs under control.
不仅可以节约能源，提高效率，提高生产力，而且有助于控制成本。
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