Scientific, measuring, signalling, checking (supervision), apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound; apparatus for recording, transmission or reproduction of sound and images; receivers (audio- and video-); sound recording apparatus; sound measuring instruments; amplifiers; data processing apparatus and computer; computer software, recorded; computer programs (downloadable software); computer peripheral devices

Electric appliance installation and repair; interference suppression in electrical apparatus; installation and repair of apparatus for recording, transmission or reproduction of sound; installation and repair of computer, measuring, signalling, checking (supervision), apparatus and instruments