金属 库存总量 注销仓单 注销占百分比 铜 261,475 135,000 51.63% 铝 1,655,825 674,325 40.72% 锌 350,750 168,925 48.16% 镍 379,338 101,196 26.68% 锡 3,040 715 23.52% 铅 165,750 86,860 52.28% 铝合金 15,080 340 2.25%