金属 库存总量 注销仓单 注销占百分比 铜 192,175 42,825 22.28% 铝 2,434,550 1,056,325 43.39% 锌 396,100 26,625 6.72% 镍 386,064 124,236 32.18% 锡 6,275 1,355 21.59% 铅 185,500 73,000 39.35% 铝合金 12,580 980 7.79%