A form of cooperative relationship among companies in Japan where the companies largely remain legally and economically independent, even though they work closely in various ways, such as sole sourcing and financial backing. A member of a keiretsu generally owns a limited amount of stockAll the goods or merchandise are stored in a wareh... in other member companies. A keiretsu generally forms around a bank and a trading company but distributionOutbound logistics, from the end of the production... (supply chain(1) Starting with unprocessed raw materials and en...) keiretsus exist, linking companies from raw material suppliers to retailers.