金属 库存总量 注销仓单 注销占百分比 铜 317,700 67,875 21,36% 铝 3,636,975 1,619,950 44.54% 锌 468,550 84,425 18.12% 镍 458,550 140,850 30.72% 锡 6,700 1,130 16.87% 铅 173,400 18,825 10.86% 铝合金 15,400 2,740 11.30%