金属 库存总量 注销仓单 注销占百分比 铜 238,000 39,525 16.61% 铝 2,877,000 1,061,225 36.89% 锌 456,175 52,850 11.59% 镍 438,828 178,410 40.66% 锡 6,245 580 9.29% 铅 191,275 110,300 57.67% 铝合金 15,200 20 0.13%