Brussels, 31/10/2000 (Agence Europe) - The European Commission decided to open a formal investigation procedure against three tax exemption systems in the Basque provinces of Alava, Guipuzcoa and Vizcaya (Spain). These systems, said "tax holiday", translate into a tax exemption for companies over ten consecutive fiscal years for new companies created up to 31 December 1994 Several push, according to the Commission, for the banning of these aids. They are illegal (and thus should be...