金属 库存总量 注销仓单 注销占百分比 铜 338,300 75,475 22.31% 铝 3,872,650 1,941,950 50.15% 铅 196,550 102,375 52.09% 锌 489,900 150,075 30.63% 锡 9,425 480 5.09% 镍 433,962 106,260 24.49%