金属 库存总量 注销仓单 注销占百分比 铜 330,125 73,800 22.36% 铝 3,903,650 2,005,125 51.37% 铅 223,125 100,300 44.95% 锌 509,925 164,525 32.26% 锡 9,830 520 5.29% 镍 431,172 104,670 24.28%