金属 库存总量 注销仓单 注销占百分比 铜 255,275 51,650 20.23% 铝 2,960,900 1,327,375 44.83% 锌 553,750 84,500 15.26% 镍 415,884 175,584 42.22% 锡 5,295 485 8.78% 铅 134,025 29,800 22.23% 铝合金 12,440 40 0.32%