金属 库存总量 注销仓单 注销占百分比 铜 240,975 102,925 42.71% 铝 5,316,650 2,914,550 54.82% 铅 196,275 24,325 12.29% 锌 792,025 153,325 19.36% 锡 9,415 5,160 54.81% 镍 276,888 128,418 46.38%