金属 库存总量 注销仓单 注销占百分比 铜 321,975 54,825 17,03% 铝 3,557,125 1,574,975 44.28% 锌 463,400 74,575 16.09% 镍 457,086 148,068 32.39% 锡 7,595 1,625 21.4% 铅 172,325 13,525 7.85% 铝合金 13,820 820 5.9%