金属 库存总量 注销仓单 注销占百分比 铜 282,475 162,125 57.39% 铝 5,338,700 2,458,675 46.05% 铅 201,350 34,150 16.96% 锌 779,050 205,550 26.38% 锡 8,375 3,675 43.88% 镍 268,152 121,746 45.40%