·2,447,543篇论文数据，部分数据来源于NoteExpress
Customer knowledge consists of five levels that are customer identification, communication channel, customer needs and wants, customer behavior, and customer value of profitability.
客户知识由客户界定、沟通渠道、客户需求、客户行为以及客户赢利价值五个层次组成。
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