Five buying groups from different European countries have decided to work together to exchange pricing information, experiences and know-how among each other in order to augment their bargaining power with major suppliers. They will also cooperate in training, the development of marketing models and shared services. The agreement was struck a few days ago in Milan by Optocoop Italia-Oxo, Federopticos of Spain, OptiTrade Holding of Holland and the AMA organizations from Germany, Greece and the UK.