金属 库存总量 注销仓单 注销占百分比 铜 298,400 133,325 44.68% 铝 2,125,800 773,400 36.38% 锌 449,050 62,000 13.81% 镍 363,162 120,462 33.17% 锡 2,930 1,805 61.60% 铅 188,125 31,800 16.90% 铝合金 13,680 20 0.15%