自由港：预计美国市场的铜销售将带来每年17亿美元的利益。

Group 1 - The core viewpoint of the article is that Freeport expects copper sales in the U.S. market to generate an annual benefit of $1.7 billion [1] Group 2 - The anticipated annual benefit from U.S. copper sales highlights the significant market potential for Freeport [1] - This projection indicates a strong demand for copper, which may influence pricing and investment strategies in the industry [1] - The expected revenue underscores the importance of the U.S. market in Freeport's overall business strategy [1]