金属 库存总量 注销仓单 注销占百分比 铜 255,500 121,475 47.54% 铝 5,266,800 2,513,650 47.73% 铅 203,100 32,175 15.84% 锌 800,150 159,575 19.94% 锡 9,035 1,760 19.48% 镍 269,886 125,934 46.66%