金属 库存总量 注销仓单 注销占百分比 铜 320,825 134,000 41.77% 铝 2,141,300 766,625 35.80% 锌 450,800 62,425 13.85% 镍 363,558 123,114 33.86% 锡 2,895 1,765 60.97% 铅 188,700 32,375 17.16% 铝合金 13,680 20 0.15%