金属 库存总量 注销仓单 注销占百分比 铜 269,525 77,825 28.87% 铝 3,016,975 1,276,900 42.32% 锌 569,100 33,875 5.95% 镍 427,518 189,234 44.26% 锡 5,200 685 13.17% 铅 144,750 40,200 27.77% 铝合金 12,240 40 0.33%