金属 库存总量 注销仓单 注销占百分比 铜 303,825 178,550 58.77% 铝 5,368,250 2,445,400 45.55% 铅 205,425 33,875 16.49% 锌 817,725 237,925 29.10% 锡 8,815 3,290 37.32% 镍 267,138 108,822 40.74%