金属 库存总量 注销仓单 注销占百分比 铜 156,500 35,575 22.73% 铝 2,626,725 1,071,725 40.80% 锌 397,525 32,775 8.24% 镍 416,442 127,728 30.67% 锡 5,735 595 10.37% 铅 174,125 78,050 44.82% 铝合金 16,840 2,180 12.95%