金属 库存总量 注销仓单 注销占百分比 铜 299,125 173,750 58.09% 铝 5,371,425 2,469,875 45.98% 铅 203,925 32,500 15.94% 锌 803,375 225,300 28.04% 锡 8,805 4,100 46.56% 镍 268,980 118,840 41.58%