金属 库存总量 注销仓单 注销占百分比 铜 146,175 31,900 21.82% 铝 4,954,550 2,887,650 58.28% 铅 215,650 10,225 4.74% 锌 655,075 63,700 9.72% 锡 11,780 2,290 19.44% 镍 317,544 98,828 30.49%