IDEA

            1981                                     1987                                    1992            
       
            VSS                                     PPG                             GRIGUA        

               1994                                1994                                1994                
       
            GRITTA                            LAMPO                    MODULAIRE        

                1994                              1995                           1996                
                   
         MANENTE                       OMNIA                    VUSCIA              

                 1999                                  2000                                 2001            
      
                ONE                                 ARIA                            KAZ