金属 库存总量 注销仓单 注销占百分比 铜 152,725 32,000 21.23% 铝 2,652,475 1,219,350 45.97% 锌 406,800 40,175 9.88% 镍 415,752 125,130 30.10% 锡 4,855 650 13.39% 铅 174,950 79,325 45.34% 铝合金 16,940 2,180 12.87%