金属 库存总量 注销仓单 注销占百分比 铜 336,250 199,625 59.31% 铝 5,453,525 2,465,425 45.21% 铅 211,500 45,775 21.64% 锌 892,300 373,100 41.81% 锡 9,580 3,745 39.09% 镍 261,900 102,840 39.27%