金属 库存总量 注销仓单 注销占百分比 铜 332,050 147,200 44.33% 铝 2,033,000 739,900 36.39% 锌 383,650 170,175 44.59% 镍 384,522 102,468 26.65% 锡 4,585 1,200 26.17% 铅 191,000 69,550 36.41% 铝合金 14,700 720 4.90%