金属 库存总量 注销仓单 注销占百分比 铜 302,050 176,457 58.43% 铝 5,358,100 2,485,375 46.39% 铅 204,925 33,375 16.29% 锌 812,600 230,250 28.33% 锡 8,790 3,390 38.57% 镍 268,668 111,612 41.54%