The agreements between the undertakings belonging to the associations ISVE, ASVIC and AMVL, the decisions of the associations, and the agreements drawn up by the undertakings through the management bodies of the associations with the Italian flat glass producers Fabbrica Pisana SpA, Società italiana vetro SpA and Vernante Pennitalia SpA constitute infringements of Article 85 (1) of the Treaty establishing the European Economic Community, in their clauses concerning: (a) as regards the articles, implementing rules and decisions taken by these associations: - the obligation on members to make purchases through the associations,
- the prohibition on members' importing, and the obligation to share out any goods imported following the association's prior authorization, from State-trading countries,
- the adoption and observance of a common price list;
(b) as regards the agreements between the associations and the producers: - the establishment of sales quotas,
- the granting of a special rebate,
- the forwarding of business information,
- the supervision of the activities of the members of the associations.