金属 库存总量 注销仓单 注销占百分比 铜 341,750 94,775 27.73% 铝 3,976,650 2,049,850 51.55% 铅 234,875 11,225 4.78% 锌 524,075 134,025 25.57% 锡 10,150 950 9.34% 镍 430,482 117,894 27.39%