金属 库存总量 注销仓单 注销占百分比 铜 351,500 108,250 30.79% 铝 1,592,300 624,350 39.21% 锌 338,700 159,575 47.11% 镍 380,712 102,930 27.04% 锡 2,375 660 27.79% 铅 177,225 90,450 51.04% 铝合金 15,080 980 6.50%