金属 库存总量 注销仓单 注销占百分比 铜 345,475 109,475 31.69% 铝 2,112,275 664,150 31.44% 锌 429,650 95,300 22.18% 镍 371,400 126,834 34.15% 锡 3,330 930 27.93% 铅 186,525 47,125 25.26% 铝合金 13,200 360 2.73%