上期所铜库存大增逾两万吨，创一年半新高

Inventory Changes - Copper inventory increased by 23,564 tons or 9.5%, reaching 272,475 tons, the highest since August 9, 2024 [2] - Aluminum inventory rose by 52,200 tons or 21.3%, totaling 297,340 tons [2] - Zinc inventory grew by 16,336 tons or 23.1%, amounting to 87,025 tons [2] - Nickel inventory increased by 1,318 tons or 2.3%, reaching 58,775 tons [2] - Lead inventory rose by 8,715 tons or 18.2%, totaling 56,539 tons [2] - Tin inventory increased by 2,264 tons or 25.9%, reaching 11,014 tons [2] - Alumina inventory rose by 57,902 tons or 18.8%, totaling 366,689 tons [2] - Cast aluminum alloy inventory decreased by 1,690 tons or 2.3%, reaching 72,735 tons [3] - International copper inventory increased by 2,277 tons or 12.4%, totaling 20,625 tons [4] Industry Challenges - The Chinese copper industry faces three main challenges: rising dependence on foreign upstream resources, overcapacity in the midstream processing sector, and downstream demand being suppressed by high copper prices [5]