金属 库存总量 注销仓单 注销占百分比 铜 318,800 190,400 59.72% 铝 5,439,125 2,440,550 44.87% 铅 209,475 39,125 18.68% 锌 859,675 277,525 32.29% 锡 8,855 3,150 35.57% 镍 264,432 101,220 38.28%