金属 库存总量 注销仓单 注销占百分比 铜 190,700 46,250 24.25% 铝 2,427,950 1,051,825 43.32% 锌 395,075 26,200 6.63% 镍 385,566 124,380 32.26% 锡 6,285 1,430 22.75% 铅 185,675 73,225 39.44% 铝合金 12,580 980 7.79%