金属 库存总量 注销仓单 注销占百分比 铜 353,375 56,375 15.95% 铝 2,188,250 892,450 40.78% 锌 447,800 26,450 5.91% 镍 367,728 118,896 32.33% 锡 4,215 1,145 27.16% 铅 187,850 66,250 35.27% 铝合金 11,680 20 0.17%