The Japanese Zaibatsu model:
The Japanese Zaibatsu model assumes that there is a strong relationship between a customer (Original Equipment Manufacturer) and a supplier company (first tier). The latter manage their own relationships with their suppliers with whom they have established long term partnerships (second tier) and so on. It is anticipated under this arrangement that no changes at all take place at the first tier level where the ties are strong. Any changes that take place occur at the second or third tiers. The customer (Original Equipment Manufacturer) may have direct dealings with second tier suppliers.
The Zaibatsu approach to managing customer - supplier chains:
A study which compared the Japanese approach towards customer-supplier chains based on the Zaibatsu model and the American approach of establishing customer supplier chains has concluded that there are nine main criteria which facilitate the creation of strong customer-supplier chains based on single sourcing. These include the following: