keiretsu
From Longman Business Dictionarykeiretsukei‧ret‧su /keɪˈretsuː/ noun (plural keiretsu) [countable, uncountable]COMMERCEORGANIZATIONS a group of companies in Japan that decide to work together so that they can control or influence prices within a particular industryThe study found that ties are loosening within the six major keiretsu.Keiretsu eliminates inefficient competition among fellow members.