金属 库存总量 注销仓单 注销占百分比 铜 321,575 149,575 46.51% 铝 1,470,550 508,375 34.57% 锌 335,875 163,525 51.31% 镍 383,844 113,958 29.69% 锡 2,060 390 18,93% 铅 183,400 68,500 37.35% 铝合金 13,420 1,100 8.20%