金属 库存总量 注销仓单 注销占百分比 铜 231,275 77,125 33.35% 铝 2,319,125 973,525 41.98% 锌 438,425 21,000 4.79% 镍 377,586 118,284 31.33% 锡 5,995 1,750 29.19% 铅 186,425 71,425 38.31% 铝合金 11,900 300 2.52%