金属 库存总量 注销仓单 注销占百分比 铜 192,375 52,875 27.49% 铝 2,415,875 1,047,600 43.36% 锌 412,150 23,525 5.71% 镍 382,104 117,000 30.62% 锡 6,180 1,330 21.52% 铅 185,650 73,375 39.52% 铝合金 12,400 800 6.45%