金属 库存总量 注销仓单 注销占百分比 铜 305,000 142,500 46.72% 铝 2,131,075 770,300 36.15% 锌 449,250 62,300 13.86% 镍 363,708 120,984 33.26% 锡 2,955 1,815 61.42% 铅 188,350 32,025 17.00% 铝合金 13,680 20 0.15%