金属 库存总量 注销仓单 注销占百分比 铜 284,050 61,525 21.66% 铝 3,098,250 917,150 29.60% 锌 581,825 45,150 7.76% 镍 435,450 190,548 43.76% 锡 4,455 275 6.17% 铅 149,325 32,750 21.93% 铝合金 12,280 80 0.65%