金属 库存总量 注销仓单 注销占百分比 铜 184,850 45,875 24.82% 铝 2,859,150 598,275 20.92% 锌 468,275 67,475 14.41% 镍 427,248 143,832 33.66% 锡 3,720 395 10.62% 铅 206,800 102,825 50.45% 铝合金 16,100 20 0.12%