金属 库存总量 注销仓单 注销占百分比 铜 282,600 112,775 39.91% 铝 2,116,600 774,225 36.58% 锌 447,800 62,325 13.92% 镍 363,708 120,984 33.26% 锡 3,035 1,730 57.00% 铅 187,725 31,400 16.73% 铝合金 13,680 20 0.15%