纳尔科公司总部位于美国伊利诺斯州的芝加哥附近，是水处理和工艺过程处理化学品解决方案的领导者，主要服务领域为水处理和过程处理。

The Nalco Company, with headquarters near Chicago, Illinois, USA, is the world leader for integrated water treatment and process improvement, focusing on water treatment and process chemicals.

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Midtronics公司总部位于美国芝加哥，在荷兰、中国、 日本和印度拥有分支机构，经销商遍布全球。

Headquartered in Chicago, USA, Midtronics has subsidiaries and offices in the Netherlands, Canada, Brazil and China and has a global network of distributors to serve the market needs.

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