The empirical results show that price has a negative relationship with sales volume, while all types of sales promotion have positive relationship with sales volume.

实证研究的结果表明，价格和销售量成反比关系，所有的销售促进手段和销售量成正比关系。

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With the competitive cost, suitable sales price, fine attitude, establish the business relationship with customers, fulfill the contract accurately, and gain profits for the company.

以具有竞争力的成本状况，合适的销售价格，优良的服务态度，建立与客户的买卖交易关系，准确地履行营销合同，为企业获得利润。

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In 2007, Price Waterhouse Coopers noted a counter intuitive relationship between profitability and sales revenue for publicly-traded fuel cell companies.

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