Only equipment with outstanding performances can improve the production efficiency, guarantee the product quality and reduce the cost, which means the extension of the profit space.
只有性能优异的设备，才能提高生产效率，保证产品质量，降低成本，也就意味着利润空间的拓展。
We concluded that:(1) Size of companies has a positive effect on profit efficiency but impacts cost efficiency negatively, and the impacts of company size decreases progressively;
研究发现：规模扩大会降低产险公司的成本效率并且提高利润效率，公司规模对成本效率和利润效率的影响都是递减的；
Finally, this paper applied some practical examples to illustrate how to apply proposed model into company project cost management for improving operation efficiency and maximizing profit.
最后通过亲身实践案例说明如何利用所研究的内容在相关的运营公司中实施有效的项目成本管理，以提高公司的生产效率和运营价值的最大化。
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