金属 库存总量 注销仓单 注销占百分比 铜 326,400 133,425 40.88% 铝 2,143,500 771,300 35.98% 锌 451,425 63,050 13.97% 镍 361,710 123,780 34.22% 锡 2,895 1,765 60.97% 铅 189,150 32,825 17.35% 铝合金 13,680 20 0.15%