金属 库存总量 注销仓单 注销占百分比 铜 228,000 76,950 33.75% 铝 2,297,450 951,400 41.41% 锌 437,950 20,475 4.68% 镍 377,202 116,190 30.80% 锡 5,985 1,815 30.33% 铅 185,850 71,200 38.31% 铝合金 11,980 300 2.50%