金属 库存总量 注销仓单 注销占百分比 铜 247,075 72,100 29.18% 铝 2,152,150 778,300 36.16% 锌 445,075 74,600 16.76% 镍 366,456 126,570 34.54% 锡 3,085 1,665 53.97% 铅 188,850 31,200 16.52% 铝合金 13,680 80 0.58%