7月17日电，美国铝业表示特朗普关税导致铝成本增加1.15亿美元。

Group 1 - The core point of the article is that U.S. aluminum companies are facing increased costs due to tariffs imposed by the Trump administration, specifically citing a cost increase of $115 million [1] Group 2 - The article highlights the direct financial impact of tariffs on the aluminum industry, indicating that the tariffs have significantly raised operational costs for companies in this sector [1]