金属 库存总量 注销仓单 注销占百分比 铜 144,350 29,100 20.16% 铝 4,936,900 2,873,000 58.19% 铅 215,650 10,225 4.74% 锌 668,625 63,350 9.47% 锡 12,490 2,305 18.45% 镍 317,874 93,588 29.44%