金属 库存总量 注销仓单 注销占百分比 铜 318,625 103,175 32.38% 铝 3,706,200 1,677,550 45.26% 锌 448,450 68,525 15.28% 镍 470,118 145,830 31.02% 锡 7,265 350 4.82% 铅 157,150 34,000 21.64% 铝合金 19,340 4,600 24.10%