金属 库存总量 注销仓单 注销占百分比 铜 234,925 76,000 32.35% 铝 2,325,600 980,475 42.16% 锌 439,075 20,775 4.73% 镍 378,816 119,928 31.66% 锡 6,015 1,520 25.27% 铅 185,925 71,425 38.42% 铝合金 11,900 300 2.52%