金属 库存总量 注销仓单 注销占百分比 铜 273,750 110,125 40.23% 铝 1,850,425 843,425 45.58% 锌 369,525 183,750 49.73% 镍 376,872 100,788 26.74% 锡 3,475 550 15.83% 铅 178,700 100,900 56.48% 铝合金 14,100 360 2.55%