金属 库存总量 注销仓单 注销占百分比 铜 328,375 184,900 56.31% 铝 5,466,875 2,509,700 45.91% 铅 208,850 42,550 20.37% 锌 875,150 296,925 33.93% 锡 9,260 2,670 28.83% 镍 260,700 106,290 40.77%