金属 库存总量 注销仓单 注销占百分比 铜 307,650 61,225 19,9% 铝 3,589,825 1,608,625 44.81% 锌 464,925 78,175 16.81% 镍 459,018 148,938 32.45% 锡 7,110 1,310 18.42% 铅 176,300 18,600 10.55% 铝合金 14,340 1,340 9.34%