金属 库存总量 注销仓单 注销占百分比 铜 579,750 281,525 48.56% 铝 5,353,725 1,958,925 36.59% 铅 182,200 73,850 40.53% 锌 985,575 607,500 61.64% 锡 14,440 2,810 19.46% 镍 217,650 43,710 20.08%