金属 库存总量 注销仓单 注销占百分比 铜 166,825 68,875 41.29% 铝 5,146,525 2,831,575 55.02% 铅 190,775 16,900 8.86% 锌 695,750 76,400 10.98% 锡 10,770 3,520 32.68% 镍 286,626 116,520 40.65%