金属 库存总量 注销仓单 注销占百分比 铜 276,400 156,050 56.46% 铝 5,324,350 2,492,375 46.81% 铅 202,575 33,700 16.64% 锌 769,300 202,525 26.33% 锡 8,365 3,690 44.11% 镍 270,882 121,266 44.77%