金属 库存总量 注销仓单 注销占百分比 铜 170,900 30,175 17.66% 铝 4,271,625 2,264,250 53.01% 铅 220,800 9,175 4.16% 锌 681,700 106,450 15.62% 锡 12,190 2,410 19.77% 镍 406,722 103,008 25.33%