金属 库存总量 注销仓单 注销占百分比 铜 159,550 36,425 22.83% 铝 4,447,200 2,633,525 59.22% 铅 224,400 14,200 6.33% 锌 711,075 136,225 19.16% 锡 9,105 615 6.75% 镍 378,222 88,482 23.39%