金属 库存总量 注销仓单 注销占百分比 铜 161,625 42,475 26.28% 铝 2,598,125 1,073,950 41.34% 锌 392,600 27,600 7.03% 镍 414,024 133,542 32.25% 锡 6,160 800 12.99% 铅 175,300 76,450 43.61% 铝合金 15,560 1,000 6.43%