金属 库存总量 注销仓单 注销占百分比 铜 297,825 58,225 19.55% 铝 1,066,225 224,675 21.07% 锌 166,050 82,350 49.59% 镍 349,476 99,528 28.48% 锡 1,770 615 34.75% 铅 130,175 52,650 40.45% 铝合金 13,460 660 4.90%