金属 库存总量 注销仓单 注销占百分比 铜 228,400 76,100 33.32% 铝 2,310,050 949,625 41.11% 锌 437,325 19,850 4.54% 镍 375,546 115,116 30.65% 锡 6,020 2,040 33.89% 铅 185,700 71,050 38.26% 铝合金 11,980 300 2.50%