证券服务营销的实质和主流是关系营销。
The essence of security service marketing is relationship marketing (RM).
证券市场是典型的知识密集型服务行业，是现代经济的核心。
Stock industry is the typical knowledge-intensive service industry, as the core of the modern economics.
他们也出售和交易证券并且提供其他服务。
They also sell and trade securities and provide other services.
他们也出售和交易证券并且提供其他服务。
They also sell and trade securities and provide other services.
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