Abstract
This paper investigates the actual conditions and problems in trade partnerships by using a case study, hoping to obtain results from an international perspective regarding "SANCYOKU" purchasing from overseas. The trade partnership was based on a 20-year alliance agreement between two partners. However, the trade partnership began weakening in 2006 because of chemical use and residues on the exported bananas. Furthermore, the Co-op did not maintain any communication with its producers, the partnership finally ended in 2009. We interpret this background from two aspects. One is the economical aspect: the sales figures have tended to decline these 10 years. Another aspect is the lack of basic activities to maintain relationships. Trade relationship activities can be considered valuable in the international trade and help in developing a food system that is consumer oriented.
