金属 库存总量 注销仓单 注销占百分比 铜 253,700 72,275 28.88% 铝 2,157,600 783,500 36.31% 锌 445,275 74,800 16.80% 镍 365,874 125,574 34.32% 锡 3,115 1,645 52.82% 铅 188,850 31,200 16.52% 铝合金 13,680 80 0.58%