金属 库存总量 注销仓单 注销占百分比 铜 597,575 316,225 52.92% 铝 5,471,475 2,097,325 38.33% 铅 199,825 105,525 52.81% 锌 1,048,950 598,925 57.10% 锡 13,750 3,845 27.96% 镍 204,108 31,698 15.53%