金属 库存总量 注销仓单 注销占百分比 铜 494,850 255,750 51.68% 铝 5,407,525 2,058,525 38.07% 铅 232,825 55,600 23.89% 锌 1,055,775 539,900 51.14% 锡 13,010 2,385 18.33% 镍 230,760 65,106 28.21%