International Meeting held in Milan in September, 1992 - translation of lectures held by MATSUSHITA ELECTRIC IND. (YOSHIHIRO SANO), MILLIKEN INDUSTRIALS (UK) (ROGER EMMS), MOTOROLA INC. (KEKI R. BHOTE), PHILIPS INTERNATIONAL (MATTHIJS VERMAAS), RHÔNE POULENC (PATRICK BERTIN), SONY CORPORATION (MAKOTO HOSHI), TOYOTA MOTOR CORPORATION (ZENZABOROU KATAYAMA)