金属 库存总量 注销仓单 注销占百分比 铜 627,675 321,100 51.16% 铝 5,460,300 2,133,625 39.08% 铅 198,775 108,075 54.37% 锌 1,059,650 639,900 60.39% 锡 14,315 4,680 32.69% 镍 199,848 28,476 14.25%