金属 库存总量 注销仓单 注销占百分比 铜 195,925 39,950 20.39% 铝 2,446,200 1,065,125 43.54% 锌 399,825 30,350 7.59% 镍 386,238 124,284 32.18% 锡 6,360 1,415 22.25% 铅 185,550 73,050 39.37% 铝合金 12,900 1,300 10.08%