Core Viewpoint - The prices of base metals on the London Metal Exchange generally declined on the 19th, influenced by ongoing trade and diplomatic uncertainties affecting demand expectations, as well as cautious market sentiment following interest rate cuts [1]. Price Summary - Three-month copper closed at $9,996.50 per ton, up $50.50 from the previous trading day, with a rise of 0.51% [1]. - Three-month aluminum closed at $2,676.00 per ton, down $29.00 from the previous trading day, with a decline of 1.07% [1]. - Three-month nickel closed at $15,270.00 per ton, down $65.00 from the previous trading day, with a decline of 0.42% [1]. - Three-month lead closed at $2,003.00 per ton, down $1.00 from the previous trading day, with a decline of 0.05% [1]. - Three-month tin closed at $34,220.00 per ton, up $470.00 from the previous trading day, with a rise of 1.39% [1]. - Three-month zinc closed at $2,898.50 per ton, down $14.50 from the previous trading day, with a decline of 0.50% [1]. Market Influences - The decline in base metal prices is attributed to mixed supply and demand signals, changing central bank policy expectations (particularly from the Federal Reserve and the Bank of Japan), and profit-taking following recent price increases [1]. - Only metals with limited supply or those less affected by demand concerns managed to maintain stable prices, while others experienced declines [1].