金属 库存总量 注销仓单 注销占百分比 铜 178,575 45,675 26.58% 铝 2,872,425 582,175 20.27% 锌 464,250 63,700 13.72% 镍 426,798 138,684 32.49% 锡 3,770 420 11.14% 铅 169,450 67,700 39.95% 铝合金 16,200 20 0.12%