Repeat sales: each product is the life cycle, each customer has a trading rule, grasp the two aspects of the data can take the initiative to promote the product sales.
重复销售：每种产品都是有生命周期的，每个客户也都有交易的规律，掌握这两方面的数据就可以主动的促进产品销售。
Repeat sales: each product is the life cycle, each customer has a trading rule, grasp the two aspects of the data can take the initiative to promote the product sales.
重复销售：每种产品都是有生命周期的，每个客户也都有交易的规律，掌握这两方面的数据就可以主动的促进产品销售。
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