金属 库存总量 注销仓单 注销占百分比 铜 327,300 132,475 40.78% 铝 2,084,800 786,550 37.73% 锌 382,525 174,800 45.70% 镍 385,830 106,554 27.62% 锡 4,845 1,025 21.16% 铅 190,400 69,475 36.49% 铝合金 13,280 960 7.23%