金属 库存总量 注销仓单 注销占百分比 铜 194,375 54,625 28.10% 铝 2,421,500 1,045,375 43.17% 锌 413,675 25,050 6.06% 镍 383,502 118,422 30.88% 锡 6,245 1,380 22.10% 铅 185,650 73,200 39.43% 铝合金 12,580 980 7.79%