金属 库存总量 注销仓单 注销占百分比 铜 333,800 80,150 24.01% 铝 3,888,875 1,990,450 51.18% 铅 218,850 95,475 43.63% 锌 506,350 160,950 31.79% 锡 9,735 425 4.37% 镍 431,214 104,274 24.18%