金属 库存总量 注销仓单 注销占百分比 铜 334,875 123,425 36.86% 铝 3,773,275 1,736,925 46.03% 锌 467,125 77,525 16.6% 镍 446,640 123,180 27.58% 锡 8,355 1,260 15.08% 铅 162,525 33,550 20.64% 铝合金 21,140 5,760 27.25%