金属 库存总量 注销仓单 注销占百分比 铜 384,950 253,750 65.92% 铝 5,407,550 2,363,900 43.70% 铅 219,100 36,800 16.80% 锌 904,925 480,200 53.07% 锡 10,210 2,820 27.62% 镍 255,246 107,208 42.00%