随着8月1日关税截止日期临近，美国铜库存创最近21年新高

Group 1 - The core point of the article highlights a significant increase in U.S. copper inventory, which has risen by 172% to 253,431 short tons, marking the highest level since 2004 [1] - In contrast, the inventory at the London Metal Exchange (LME) has decreased by approximately 50% [1]