金属 库存总量 注销仓单 注销占百分比 铜 159,550 27,975 17.53% 铝 4,462,075 2,648,400 59.35% 铅 224,675 14,500 6.45% 锌 712,725 137,875 19.34% 锡 9,105 565 6.21% 镍 378,132 90,942 24.05%