金属 库存总量 注销仓单 注销占百分比 铜 341,325 87,475 25.63% 铝 3,880,125 1,789,550 46.12% 铅 170,250 71,650 42.09% 锌 465,950 132,450 28.43% 锡 9,070 940 10.36% 镍 444,060 119,106 26.82%