金属 库存总量 注销仓单 注销占百分比 铜 341,275 78,750 23.08% 铝 3,878,375 1,960,325 50.55% 铅 200,200 106,325 53.11% 锌 492,575 148,250 30.1% 锡 9,655 585 6.06% 镍 433,734 107,388 24.76%