金属 库存总量 注销仓单 注销占百分比 铜 353,075 228,875 64.82% 铝 5,451,550 2,357,075 43.24% 铅 214,500 30,650 14.29% 锌 918,325 412,625 44.93% 锡 9,725 3,980 40.93% 镍 260,724 99,624 38.21%