金属 库存总量 注销仓单 注销占百分比 铜 156,725 42,600 27.18% 铝 2,620,450 1,074,650 41.01% 锌 396,400 31,650 7.98% 镍 415,134 129,444 31.18% 锡 5,860 595 10.15% 铅 174,675 78,050 44.68% 铝合金 16,840 2,180 12.95%