金属 库存总量 注销仓单 注销占百分比 铜 199,250 41,525 20.84% 铝 2,777,450 721,250 25.97% 锌 488,450 72,000 14.74% 镍 443,010 165,468 37.35% 锡 3,850 615 37.35% 铅 215,875 92,475 42.84% 铝合金 15,600 20 0.13%