伦铜下跌，因库存攀升且需求疲软

Group 1 - LME copper prices have declined by 0.62% to $13,095 per ton, while Shanghai Futures Exchange's most active copper contract rose by 0.09% to 101,600 yuan per ton [1] - The increase in inventories and weak demand continue to pressure copper prices, with LME copper stocks rising to 184,300 tons from 137,225 tons on January 10 [1] - The upcoming Chinese New Year holiday, starting February 15, is expected to further impact demand as buyers complete pre-holiday restocking [1] Group 2 - Yangshan copper premium has increased from $20 per ton to $38 per ton, but remains low compared to over $50 per ton at the end of December, indicating weak demand [2] - Other base metals on the Shanghai Futures Exchange showed mixed performance, with tin rising by 3.42% and aluminum, zinc, and nickel declining [2] - LME's three-month tin prices remained stable, while aluminum, zinc, and nickel prices decreased by 0.72%, 0.34%, and 1% respectively, with lead prices increasing by 0.20% [2]