金属 库存总量 注销仓单 注销占百分比 铜 330,050 73,800 22.36% 铝 3,896,450 2,005,125 51.46% 铅 223,545 100,300 45.27% 锌 509,925 164,525 32.26% 锡 9,780 520 5.32% 镍 431,282 104,670 24.27%