自此，西门子一直作为广州地铁的项目合作伙伴，包括“交钥匙”工程、信号系统、地铁列车、电气化与牵引系统及产品。

Since then, Siemens has always been the project partner of Guangzhou metro in terms of turnkey project, signalling systems, metro cars, electrification and propulsion systems and products.

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如果是“交钥匙”工程，那么对应于业主对项目的管理来说，就只有总承包商的项目管理了。

If "turnkey" projects, Then corresponding to the owners of project management, it is only the general contractor of the project management.

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自从进入中国市场后，公司在全国范围内负责了一系列具有重要意义的大型项目，其中包括了多项“交钥匙”工程。

KOOPX has been responsible for a series of influential large - scale works around the ry, including some "turn-key" projects.

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