sales and after-sales service resp. conception, installation, start-up and maintenance: electrical household appliances, audio, TV, video and DVD appliances; installation material for low and middle voltage; cable; measuring, regulation and automation equipment; cabling of data network with optical-fibre cable and copper cable; automation of industrial production plants; CCTV; terrestrial and satellite TV reception equipment, CATV systems; fixed and mobile telecommunication systems and units, GSM; photovoltaic systems; air navigation systems