Intermediaries are entities positioned between a client and service provider that provide additional functionality and value-added services.

中介体是位于客户机和服务提供者之间的实体，它提供额外的功能和增值服务。

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It is another move to be the kind of value-added service provider, like IBM, the company hopes to be.

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OnStar, a wholly owned subsidiary of General Motors, is the leading global provider of connected safety and security solutions, value-added mobility services and advanced information technology.

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China Mobile, the largest mobile service provider in the world, derives most of its revenues from mobile services as well as value added services like data, SMS, mobile Internet, voice mail and other features.

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