本月，中国有关部门在华东港口城市青岛展开一项调查，此前一家金属企业被指用同一批铜和铝库存重复质押，以骗取贷款。
An inquiry was launched this month in the northeastern port city of Qingdao following allegations that a metals company had pledged the same stocks of copper and aluminium multiple times as collateral for loans .
重复质押